Tags: ui

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Wednesday, January 22nd, 2020

The CSS Cascade

This is a wonderful interactive explanation of the way CSS hierarchy works—beautiful!

Building

The opening presentation from the New Adventures conference held in Nottingham in January 2019.

Good morning, everybody. It is a real honour to be here. As Simon said, I was here six, seven, eight years ago attending this conference because it’s such a great conference. I’m kind of feeling the pressure now that I’m up here on the stage speaking at this conference. I’m just glad I’m on first so I can get it over with and then listen to all these great talks.

I’m here today to talk to you …which is kind of weird when you think about it. I mean, first, the fact that it’s me up here on the stage through some clerical error.

But also, I’m going to talk to you. I’m going to vibrate air over my vocal cords and move this big meaty piece of flesh inside my jaw up and down vibrating the airwaves and you’re going to listen to me doing that. It seems like a crazy thing to do except for the fact that, of course, I’ll be using language.

Language

Maybe the great distinguishing feature of our species, language. The great leap forward that happened—who knows—50,000, 100,000 years ago when we, as a species, developed language. With language, by moving those vocal cords and that big piece of flesh in my jaw, we can tell stories. I can recount something that happened in the past.

Perhaps more amazingly, we can imagine things that might come to be. I could tell you something that might happen in the future. So language is a kind of time travel.

It’s all possible because we’re speaking the same codebase. The particular language I’m talking now is English. As long as you can decode English then all these noises I’m making will make sense to you even if there isn’t actually any information in the words. I can say Chomsky’s famous one.

Colourless green ideas sleep furiously.

You can parse that. It doesn’t make any sense, but you can parse it.

Most of the time, the sentences we use also convey some kind of information. Language is not just time travel. Language is also communication.

There can be an idea that’s sitting in my head and I’ll, you know, vibrate the air and vocal cords, flap this big fleshy thing in my jaw around, and transfer the idea from my head to your head. Language is almost like a virus. You can’t help but take the idea in.

I can say to you, “Don’t think of an elephant,” right? Now you’ve just thought of an elephant. It’s the language equivalent of the chicken game which, if you haven’t played before, sorry. You’ve just lost.

Chicken game. Don’t look at this chicken. Game over.

This sentence, “Don’t think of an elephant,” is actually the title of a book by George Lakoff. George Lakoff is a linguist. He’s written many books. He wrote Women, Fire, and Dangerous Things. He wrote this, Metaphors We Live By, because he’s kind of obsessed with metaphors.

We use metaphor all the time in language. We use conceptual metaphor, so when we take one idea and we use the language of that idea to talk about a different idea. The classic example being something intangible.

Let’s say time. How do we talk about time when we can’t touch it, we can’t feel it, it’s intangible? Well, we use metaphor.

We talk about time as though it’s a physical object moving through space. We say time flies or time drags or we talk about time as though it’s a resource. We talk about saving time, wasting time.

You can’t do any of those things with time. That’s not how time works. But the metaphor is very helpful.

The other kind of metaphor is the cognitive metaphor. This is what George Lakoff is interested in, particularly in things like political language. How we frame a debate can tip the scales of how that debate would unfold. If we were about to have a debate about tax relief, well, before the debate has even begun, we’ve framed taxation as something you need relief from and the scales have been tipped.

I’m very interested in this idea of metaphor, analogy, and simile and how we talk about the work we do. It’s such a young industry. What we do is we borrow from other industries. We’re not the first to do this. There’s a great book called Understanding Comics by Scott McCloud. Who’s read Understanding Comics? It’s great.

It’s about comics but, really, it’s just a fantastic book. It’s written as a comic. In it, Scott McCloud makes the point of this new medium, comics, had to kind of borrow from the existing mediums that came before. He points out that this isn’t new. He says:

Each new medium begins its life by imitating its predecessors. Many early movies were like filmed stage plays. Much early television was like radio with pictures.

Right? That it takes time.

Now, this idea of a new medium having to borrow the tropes and the language of the medium that came before, this idea pops up again on the web in this article published in the year 2000 by John Allsopp on A List Apart, A Dao of Web Design. Can I get a show of hands of who’s read A Dao of Web Design? Awesome. You are my people. The rest of you, please read it. It’s such a wonderful article.

It’s crazy that I’m standing up here recommending, “Oh, yeah, you should totally read this article from the year 2000,” but it is relevant. It’s amazingly relevant still today. It’s maybe more relevant today than when it was written. 
In the article, John says:

When a new medium borrows from an existing one, some of what it borrows makes sense, but much of the borrowing is thoughtless, it’s ritual, and it often constrains the new medium. Over time, the new medium develops its own conventions, throwing off existing conventions that don’t make sense.

Now, at the time John was writing this, 2000, of course, we were borrowing from what had come before in the previous medium and that was print. We were trying to figure out how do we get the same level of control that we were used to in the world of print on the web. We did that using clever techniques thanks to David Siegel who wrote this book, Creating Killer Websites. David Siegel, if you don’t know the name, you’re certainly familiar with his work because he’s the guy who came up with the idea of using tables for layout or having a one-pixel by one-pixel spacer GIF.

Hey, listen. That was the only way we could do it back then. They were hacks, yes, but they were necessary hacks. He did actually recant. Years later, he wrote a piece that said, the web is ruined and I ruined it. This may be overstating the case, but you know.

He was pointing out we could use these techniques, these hacks to constrain Web and make it work like print. We could get pixel-perfect control. John Allsopp, in his article, he’s kind of pushing against and going, no, no, no:

The web is a new medium. It has emerged from the medium of printing whose skills and design language and convention strongly influence it. It is too often shaped by that from which it sprang. Killer websites are usually those which tame the wildness of the web, constraining pages as if they were made of paper. Desktop publishing for the web.

So, I mean, John totally acknowledges that there is a lot to learn from this rich, rich history of print and, before print, just writing. This is clearly the second great leap of our species. We had language where we could communicate ideas, tell stories, imagine the future—as long as we’re in the same physical space—and then we came up with writing. Now we can communicate, re-viral ideas, talk about the future and the past, and we don’t even have to be in the same physical place. Someone who died centuries ago can put an idea in your head by putting language onto a medium like vellum or, later, paper.

You can see this evolution over centuries from illuminated manuscripts to the printing press, Gutenberg, until we get to the 20th Century and we really start to refine the design. We got the Swiss School of Design, the fonts, typography, and the grid system. There’s a lot to learn here.

The Book of Kells. Gutenberg’s bible. Grid Systems.

What’s interesting to me, though, is what seems to be this battle of extremes. We’ve got David Siegel talking about desktop publishing for the web, effectively, and John Allsopp talking about, “No, the web is its own medium. It needs to have its own conventions.”

They seem to be at opposite ends of a spectrum. Yet, they actually have a commonality because, on both sides, when they’re talking about this, they’re talking about websites — web sites. Now, that in itself is a metaphor. You don’t have physical sites on the web. It’s intangible like time. Yet, we chose this metaphor. The idea of a site, a place where you go to a physical place.

Site actually is pretty good with connotations of a building site, a construction site. That was literally the metaphor in the ’90s. The web is like a construction site. It kind of is constantly under construction. Oh, you want the full nostalgic effect?

Under construction.

There we go. We’re back to Geocities. But I feel like then we decided to grow out of this metaphor and use more grownup metaphors. We got professional. We had to borrow from other industries, other mediums, and here’s one that people are very fond of borrowing: architecture—describing what we do as architecture.

Architects

Whether it’s on the design side or the development side, talking about us as architects. It seems like a very appealing industry to borrow from, which is fascinating. If you ever talk to architects, man, it’s a shitty industry. Spec work, awards, and competition, it’s not a great industry.

But we seem to hold it up as, like, “Oh, yeah, we’re like architects because architects are awesome.” I think of Hollywood because every Hollywood movie that has an architect in it, the architects are always really nice people. They’re always like the protagonist, never the antagonist. The architect is never the villain.

It’s fair enough. It’s fair enough to borrow things from something like architecture. For example, I know plenty of designers who would say that this book is the best book about UX that they’ve ever read, 101 Things I Learned in Architecture School by Matthew Frederick. It was published in 2007. It’s not written for UX designers. It’s not written about the web, but there are lessons in there that are directly applicable.

There are other works from the world of architecture that have definitely influenced the work we are doing today like the classic from Christopher Alexander, A Pattern Language. Now this—I say classic rightly—this is a classic book. A classic book is a book everyone has heard of and nobody has read.

That is certainly the case here. Published in 1977, and it influenced lots of people doing things in the digital space. Ward Cunningham, the inventor of the wiki, he said, yeah, he was really influenced by A Pattern Language.

The idea of a pattern language, it’s architecture, but breaking things down into components that you could change the parameters we used in public spaces, buildings, things like that. It’s a modular approach. Later on, in the software world, a gang of four, they wrote Design Patterns: Elements of Reusable Object-Oriented Software, and they were directly influenced by Christopher Alexander, this idea of a pattern language, components, patterns, modularity.

What’s interesting is there’s another book by Molly Wright Steenson, you may remember was a blogger, Girl Wonder. She worked in the world of architecture and she’s written a book about the influence of architects and designers on the digital space. Richard Saul Wurman, and information architecture. There’s a very direct metaphor there, but also Christopher Alexander.

She points out, actually, the funny thing is, he’s had way more of an influence in the digital space than he ever had in architecture. Most architects don’t like him. They think he’s a bit preachy. But his influence in the digital space is massive. Here I am talking about modularity, components, and patterns. Well, I mean, that is so hot right now. Design systems, we’re breaking things down into patterns. 
In fact, I ended up organizing a conference in 2017, purely about design systems, pattern libraries, styles, all this stuff called Patterns Day. It was great. We had these wonderful speakers. Jina Anne was there, Rachel Andrew, Alla Kholmatova, Alice Bartlett. It was great.

But, by the end of the day, I was kind of half-joking as saying, we should have had a drinking game where, every time someone referenced Christopher Alexander, we had to take a drink because his spirit loomed large over this. Actually, the full rules of the drinking game I came up with afterward where any time someone references Christopher Alexander, you take a drink. Any time someone says Lego, you take a drink. Any time someone says that naming things is hard, take a drink. Any time someone says atomic or atomic design, take a drink. Anytime someone says bootstrap, you puke the drink back up.

A Pattern Language is a work of architecture that directly not just influenced but is still influencing our work today; the idea of breaking things down into components to reuse.

Now, there’s another work from the world of architecture that has a big influence on me. It’s a classic book, again, How Buildings Learn. It’s the best book I’ve never read, published in 1994, by Stewart Brand. There was also a TV series that went with this that’s pretty fascinating.

In this, he talks about the work of a British architect named Frank Duffy and Duffy’s idea of something he called shearing layers. What Duffy said was that a building properly conceived is several layers of longevity. He kind of broke these down. You’ve got the sites that the building is on. We’re talking about geological time scales.

Then above that, the structure you hope will last for centuries. Then you’ve got the infrastructure inside the building that you might have to swap out every few decades. Change the plumbing. Then you’ve got the walls and the doors. You can change them every so often until you get into the room. You’ve got furniture, which you can move on a daily basis.

The time scales get faster as you move inward. He diagrammed it like this. This is shearing layers diagrammed for the building. I find this really interesting, this idea of different time scales.

Shearing layers.

But there’s another factor here I’m kind of fascinated by, which is that each layer depends on the layer below. You can’t have a structure until you’ve got a site to build on. You can’t have furniture inside a room until you’ve got the room. You need to have the walls there. Each layer is building on top of what’s come before. You can’t jump straight ahead to furniture without first having all those other layers.

Now, this reminds me of another idea that the writer Steven Johnson talks about a lot in his work, for example, this book, Where Good Ideas Come From. This is the idea of the adjacent possible, that certain inventions leap forward that can’t happen until other things have happened before them.

There’s a reason why the microwave oven wasn’t invented in medieval France. Too many other things had to be invented first before something like the microwave oven becomes inevitable.

Everything we do is kind of built on this idea of the adjacent possible because businesses and services on the web are on top of a whole bunch of layers of adjacent possibilities. You can’t have Twitter, Facebook, or Wikipedia until the web exists. The web itself is built on all of these layers that have to happen first.

We have to have the Industrial Revolution. We have to have electricity. Then somebody has to create circuitry. We have to get to the idea of having computers and then networked computers, something like the Internet. Then the web becomes possible. Once the web is possible, then all these businesses on top of the web become possible.

This idea of the adjacent possible, the shearing layers, they kind of fascinate me because I’m seeing a parallel there.

Now, Stewart Brand, who wrote about shearing layers and architecture, he revisited this idea of shearing layers and took them out from the world of architecture in a later work called The Clock of the Long Now. Stewart Brand is one of the founders of the Long Now Foundation. If you haven’t heard of it, it’s an organization dedicated to long-term thinking. I’m a card-carrying member. The card is designed to last for a few thousand years as well.

They’re currently building a clock that will tell time for 10,000 years. Brian Eno has written an algorithm for the chimes so that when it chimes once a century, it will never be quite the same chime. It’s encouraging long now thinking.

In this book, the full title of the book being The Clock of the Long Now: Time and Responsibility: The Ideas Behind the World’s Slowest Computer, he extrapolates shearing layers into something he calls pace layers. If you take the shearing layers model and look around you, it’s everywhere. It’s kind of like systems thinking, the Donella Meadows idea that systems are everywhere.

Pace layers.

It’s kind of true. You look around these pace layers; shearing layers applied to the real world are everywhere. The example he gives is our species. If we look at the human race, we have these different time scales. The slowest is our physical nature as in our DNA, our physiological nature. That takes millennia to change. Physiologically, there’s no difference between a caveman and a spaceman.

Above that, you’ve got culture. This takes centuries, maybe longer, to accumulate over time.

Then systems of governance; not governments — governance. How are we going to run the societies?

An infrastructure, you want that to move faster, but not too fast or it could be very disruptive. 
Then you get into commerce, trading. Very fast-moving.

Then, finally, you’ve got fashion, which is super-fast. By fashion, he means things like popular music, anything that’s supposed to move fast. If fashion moved slowly, that wouldn’t be a good thing. It’s meant to move fast. It’s meant to try things out. “What about this? No, what about this? Try this.” Right? You don’t want for the things further down.

He’s mapped this onto these layers. From shearing layers, we go to pace layers. They have different timescales.

I’m talking about the difference between these really fast layers at the top, you know, “What about this? Try this? Today, we’re doing that,” compared to the really slow layers at the bottom that move slowly and are resistant to change.

He says:

Fast learns but slow remembers. Fast proposes and slow disposes. Fast is discontinuous but slow is continuous. Fast and small instructs slow and big by a crude innovation, an occasional revolution, and slow and big controls small and fast by constraint and constancy. Fast gets all our attention, but slow has all the power.

Now, once I was exposed to this idea and this virus had landed in my head, I found that I couldn’t get it out of my head. I started seeing pace layers everywhere. At Clear Left, where I work, it’s a running joke. On every project, we have a kickoff. It’s like, what’s the time to pace layers? How long will it be before someone makes a pace layer analogy? It’s like my brain has now been rewired to see pace layers everywhere.

It’s like, you know, the first time that someone points out the arrow in the FedEx logo. There was your life before that and there’s your life after that.

You’ve all seen the arrow in the FedEx logo. Yeah.

What about Toblerone? You’ve all seen the bear? Ah, yeah! Right? You will never be able to unsee that.

Consider the duck.

It’s a perfectly normal, ordinary duck. Agreed? But then your brain is exposed to the idea that all ducks are actually wearing dog masks.

All ducks are actually wearing dog masks. Now, when I show you the same picture of the same duck—

—you will never be able to unsee that. That’s how my brain feels when it comes to pace layers. I see them everywhere. It’s like the crazy wall part of the serial killer’s lair in the murder mystery. It’s just pace layers.

I couldn’t help but apply pace layers to the work we do mapping our medium to pace layers. Let’s try it with the World Wide Web.

The layers of the web.

Well, we build on top of the Internet. We can’t have the web before having Internet. At the very bottom layer, you’ve got the protocols of the Internet itself, you know, TCP/IP, which have been pretty much unchanged for decades. They were there from the ARPANET before the Internet. It’s a good thing that they’re unchanged. You would not want to be swapping out that low layer very quickly.

Above that, we have all the different protocols we use, protocols for email, protocols for file transfer, and protocols for the World Wide Web, HTTP, the hypertext transfer protocol. Now, this has evolved over time. We now have HTTP2, but it’s been a slow process and that feels right. Again, we shouldn’t be swapping out too quickly, but it’s a bit faster moving than the Internet protocols. 
On top of HTTP, we can put our URLs. Now, I would love it if URLs were right down at the bottom layer and they were permanent and they never changed and they never went away. That is the web I want, but I must acknowledge that, alas, you have to work hard to keep URLs alive. They do change. They do move. They do get destroyed, which is a bit of a shame, but we can work at it, people. We can work on keeping our URLs alive.

What we put at that those URLs, at the simplest level, we’ve got HTML. It was there from the start. From day one of the web, HTML was there and it’s still there today, but it’s evolved. It’s changed over time. Initially, HTML had 21 elements and now it’s got 121 elements, so it’s evolved.

But it feels like you can keep up with the pace of change. The last big evolution of HTML was 2010, later, with HTML5. We do get new editions every now and then, but it’s fine. We can keep up with it.

Then CSS, CSS changes may be more — definitely changes more rapidly than HTML. That feels like a good thing. We kind of want more. Give us some more CSS and now we’ve got Grid and we’ve got Flexbox. We’ve got all these great, new CSS things. Custom properties.

I don’t feel too overwhelmed by that. I still feel like, “Oh, no, this is good. We’ve got new CSS. I’m feeling I can keep on top of this, you know, read the right articles, read the right books, try them out. It’s fine.”

Then there’s the JavaScript ecosystem.

Specifically, the ecosystem, not the language, because the JavaScript language itself doesn’t actually change that often. ES6 or ES2000, whatever we’re talking about the evolution to the language, they’re not so rapid that we’d get overwhelmed. But the language ecosystem, the culture of JavaScript, that feels overwhelming to me. Right? Since I’ve been speaking up here, two new JavaScript frameworks have been released.

The pace, I constantly feel like I’m falling behind like, “Oh, I haven’t even heard of this new thing that apparently everybody is using.”

Does anyone else feel overwhelmed by this pace of change? Okay, good. Keep your hands up for a sec and just look around. All right? You are not alone. This turns out to be normal.

But here’s the thing. By mapping these different rates onto this model of pace layers, I actually start to feel better about this because let’s say the JavaScript ecosystem is fashion: “It’s going to do this. No, no, today we’re doing that. Try this. Try that.”

Whereas, “Oh, okay. It’s supposed to move fast. It would be bad if it moved slow. It’s meant to be trying stuff out. We see what sticks.”

With fashion, the best of pop music will probably last and find its way down the layers into culture, a slower pace layer. With the JavaScript, the patterns that work in JavaScript may find their way down into the slower moving layers.

To give you an example, when JavaScript was first invented—I’m showing my age here—I remember the common use cases were rollovers, image rollovers. And form validation, so mousing over something and changing how it looks, we’d use JavaScript for that. If someone is filling in a form and there’s a required field, we’d use JavaScript to make sure that required field was filled in.

These days, we wouldn’t even use JavaScript for either of those. We’d use CSS to do rollovers. We’d use HTML to add just one required attribute. The pattern, it stuck. The spaghetti stuck to the wall and it moved down the layers into something more stable.

That’s what JavaScript is kind of supposed to do. When we’re trying to responsive images, we had JavaScript solutions until we got to something that was further down the stack in HTML.

I do feel overwhelmed by the pace of change. But I’m starting to feel a little better about feeling overwhelmed, that it’s okay. JavaScript is meant to feel overwhelming. It’s where we try stuff out. It’s where stuff moves fast.

Now, the other thing I realized by mapping our technology stack of the web onto this pace layer model is that this is how I build. When I’m building a website, I pretty much start at the third layer. I don’t worry about, is the Internet on.

I start with URLs. I think URL design is a really good place to start designing. It is a design discipline, a neglected one, but it is design. Then I think about the content and then structure that content using the best available markup of HTML. I think about the presentation may be on a small screen first and then the presentation on larger screens using CSS. Then start thinking about extra behaviors that I can’t get with HTML and CSS, so I reach for JavaScript to add those extra behaviors.

This seems to me to make sense as a way of building on the web because it maps to the structure of the pace layers of the web. But it’s also a testament to the flexibility of the web that you don’t have to build this way. If you don’t want to build in this layered way, you don’t have to.

In fact, you can build like this. You can put something that’s on the Internet, but you just do everything in JavaScript. URL routing, let’s do that in the browser in JavaScript. The Document Object Model, let’s generate that in the browser in JavaScript. CSS, apparently we’re doing it in JS now.

Everything in JavaScript. This is an absolutely legitimate choice. You can choose to build things on the web like this. The web allows this. Again, it’s a testament to the flexibility of the web.

Now, personally, I don’t build like this and this doesn’t feel quite right to me. It doesn’t feel like it maps to the web too well. It kind of turns it into this all or nothing situation where, as long as we’ve got JavaScript, everything is going to be great. But if we don’t, there’s nothing.

You end up with this situation where we’ve turned what we’re building on the web into a binary situation. Either it works great or it just doesn’t work at all. There’s this kind of single point of failure there with the JavaScript.

Now, this model makes complete sense in other mediums. I think other mediums have influenced our thinking on the web. Maybe we’ve borrowed the metaphors of these other mediums.

For example, if you’re building a native app, this makes complete sense. If you’re building an iOS app and I have an iOS device, it works great. I get 100% of what you designed. But if you build an iOS app and I have, say, an Android device, it doesn’t work at all. You can’t install an iOS app onto an Android device. Those are your options: either it works great or it doesn’t work at all. This mental model makes complete sense in that field.

On the web, because we can have this layered approach, that means we can build like this. We can go from something that doesn’t work at all to something that just about works—maybe it’s just text on a screen—to something that works fine—maybe it’s missing a bunch of behaviors, but the user can accomplish what they want to do—to something that works well, but maybe the latest and greatest browser APIs aren’t supported by a particular browser—and then to something that works great like the latest browser running the best device, great network.

Building in layers.

Most people are going to be somewhere on this continuum. Maybe nobody is going to get 100% of what you hope they get, but no one is going to get zero percent either as long as you’re building in this way, as long as you’re building with the grain of the web, building in layers, one thing on top of the other.

I’m going to quote Ethan here. Hi, Ethan. Ethan said:

I like designing in layers. I love looking at the design of a page, a pattern, whatever, and thinking about how it would change if, say, fonts aren’t available or JavaScript doesn’t work or if someone doesn’t see the design as you and I might and is having the page read aloud to them.

In a way, this is a way of busting assumptions, the what-ifs. What if something isn’t supported? By building in a layered way, it’s okay. Everything will fall back to the layer below, the adjacent possible.

Now, Ethan, of course, we all know from this article, Responsive Web Design, published on A List Apart. When was that? 2010. My God, nine years ago. Ten years after, John Allsopp published A Dao of Web Design on A List Apart. One of the first things Ethan does in this article is to reference A Dao of Web Design. You could say that Ethan was building on top of that foundational layer that was set by John Allsopp.

Architecture again. Responsive web design. The reason why Ethan chose that term was because there was this idea in architecture called responsive architecture about buildings that could respond to the conditions of the people in the buildings. That made a really good metaphor for talking about the web on large screens, small screens, and everything in between.

This architecture thing, as a metaphor, it’s not bad. We can learn from it. I think, just be careful not to take it too far.

It’s not the only metaphor we use. Here’s another one. When we don’t talk about ourselves as architects, we’re engineers. Yeah.

Engineers

It sounds good. This one predates the web. We’ve been talking about the idea of software engineering for a long time. I’m very partial to this term: software engineering. Not so much for the term itself. Not that I think it’s a particularly good metaphor, but from where it comes from, which is fricken’ awesome.

Margaret Hamilton.

The term “software engineering” comes from Margaret Hamilton. Margaret Hamilton was in charge of the onboard flight software on the Apollo moon landing. This is engineering. That is the code base she’s standing next to there, which would then literally be woven into the computers onboard Apollo.

But as a metaphor, engineering, well, there’s a whole bunch of different kinds of it. What kind of engineer are we talking about here? Is it material engineering, structural engineering, chemical engineering, aeronautical engineering? They all have commonalities. One being, as an engineer, you’ve got to know two things. There’s the materials you’re going to be working with and the tools you’re going to use to shape those materials.

Now, I think that we can use that metaphor and apply it to the web. I would say the materials on the web are HTML, CSS, and our JavaScript, hopefully in that order. Then we’ve got the tools we use to design for the materials of the web. 
Now, the most obvious tools we could think of are graphic design tools. We started using Photoshop even though that was never intended for Web design. Since then, we’ve evolved and we’ve got tools that are much more focused on the web, things like Sketch, Figma, and all this kind of stuff.

These are obvious tools we use to build the web, but there are less obvious tools. If you were working on a Web project, these tools also get used. You’re going to be talking over email. You’re going to be communicating over Slack, organizing spreadsheets, spreadsheets people.

We talk about these as productivity tools, though sometimes I know it feels like they are reducing productivity rather than increasing it. But it’s kind of a misnomer when you think about productivity tools. All tools are productivity tools. That’s literally what tools are for is to make you more productive.

I think we should acknowledge that these are legitimate design tools. You can’t launch a project without putting in some time and some kind of communication tool.

Then when it comes to the actual welding of these materials, we’ve got a whole bunch of tools that sit in our machines or sit in our Web servers. Now I feel like I’m back up at that top layer of the pace layers and I’m getting overwhelmed with the task runners, the build tools, the chains, the transpilers, and the preprocessors. Apparently, it changes every week. Oh, you’re still using Grunt? No, we’re using Gulp. No, Webpack. That’s what’s so overwhelming.

It also feels like it’s quite complicated. This is complicated stuff, but it’s like we’ve chosen it. We’ve chosen to make our lives complicated, in a way.

I’ll tell you what it reminds me of. Do you remember that startup, Juicero?

Where they sold a big, expensive, complicated machine to make juice, but you had to buy exactly the right juice packets to put in the big, expensive machine to make the juice. It works. It works great. The big, expensive, complicated machine does its job but somebody noticed that you could actually just take the packets and squeeze them by hand and it still produces juice. I’m just saying that squeezing by hand is still an option. You can build websites by squeezing by hand. (I think this metaphor has been stretched just about as far as it can do, so I will leave it there.)

There’s this other kind of spectrum, I guess, between the materials and the tools and then the people that will be exposed to the materials and the tools. They kind of fall into two categories: the engineers themselves and the end-users.

When we’re evaluating our tools and asking, “Is this the right tool to use?” we should evaluate it from our perspective, yes, “Is this going to be a helpful tool to me as an engineer?” if we’re using that metaphor. But I strongly feel we should also ask, “Is this going to be useful for the end-user?”

If those two things come into conflict, what then? Do we privilege our own experience over the user experience? I would hope not. I worry that, in a lot of tool choices, particularly on stuff that gets sent down to the browser. “Oh, I’m going to use a CSS framework.” Great. Good for you. That’s helping you out but now the user has to pay the cost of the benefit that you get from that CSS framework because they have to download the whole CSS framework.

Sometimes, these things come into conflict and I feel like maybe we privileged the developer experience over the user experience and that worries me. The other time they don’t come into conflict. All those tools like preprocessors and task runners that just sit on your own computer, no direct effect on the end-user experience. Frankly, use whatever you like. It doesn’t make a direct effect on the end-user experience.

When we’re evaluating tools, there are all these questions to ask. Who benefits from the tool? If I choose to use this tool, will it benefit the users? Will it benefit the engineers? Neither? Both?

There are other questions we ask like, well, just how good is this tool? To evaluate that we ask; yeah, how well does it work? Does this tool do what it says it will do well?

This, of course, is a completely valid question to ask but there’s a corollary that I think is more valid and that’s to ask not just how well does it work but how well does it fail?

What happens when something goes wrong?

This is exactly why I think this layered approach makes sense because, if you build in this layered way, each one of these layers can fail well. If you build like this, then JavaScript can fail well. What if something goes wrong and you’ve got an error in your JavaScript? You fall back to something that still works. Not as great as it worked before, but it still works. It fails well.

These technologies on the web, they fail well by design. CSS fails well. Use a CSS property the browser doesn’t understand or CSS value. The browser just ignores it. It fails well.

HTML: Make up an HTML element. Throw it into a webpage. The browser doesn’t throw an error. The browser doesn’t stop parsing the webpage. It just ignores it and moves on. It fails well.

It actually makes sense to not jump ahead to the powerful stuff, to the top of the pace layers, but to try and build in layers and stay low for as long as possible. This is actually a principle, a principle that underlies the architecture of the web itself called the Principle of Least Power. You should choose the least powerful language for a given purpose, which seems really counterintuitive.

Why would I choose the least powerful language to do something? Surely, I want more power. The idea here is the power comes at an expense. Power comes at the expense of complexity, fragility. The more powerful technology is maybe more likely to fail badly.

Derek Featherstone put it well. He said:

In the web front-end stack—HTML, CSS, JavaScript, and ARIA—if you can solve a problem with a simpler solution lower in the stack, you should. It’s less fragile, more foolproof. It just works.

The example there was rollovers. How are you going to do rollovers? Do it in JavaScript? No, do it in CSS. :hover - done. Right? Oh, you need to make an interactive button? Use the button element. Be lazy.

This makes a lot of sense, the Principle of Least Power. It makes a lot of sense to me on the web, especially when you combine it with a universal law that definitely applies on the web, and that’s Murphy’s Law:

Anything that can possibly go wrong will go wrong.

This comes directly from the world of engineering. Edward Aloysius Murphy Jr. was an aerospace engineer. It’s because he had this attitude, he never lost anybody on his watch.

I think we tend to dismiss things going wrong as edge cases. We kind of assume the average output. Other industries, when they’re making cars, they test them. They strap crash test dummies in. They smack them into walls at high speed.

To be fair, a lot of the reason why they have to do that is because of regulation. They didn’t necessarily choose to do it, but still. Can you imagine if they went, well, actually, we realize that most people are going to drive cars on roads and people driving into walls is an edge case, so we’re not going to worry too much about that?

Now, obviously, you want to hope for the best but you should prepare for the worst. Trent Walton said:

Like cars designed to perform in extreme heat or on icy roads, websites should be built to face the reality of the web’s inherent variability.

The web’s inherent variability, that gets to the heart of it.

Dave Siegel was trying to battle with the pixel-perfect labels was the web’s inherent variability. What John Allsopp was calling was for us to embrace the web’s inherent variability. It’s a feature, not a bug.

Are we engineers? Can we call ourselves engineers? Well, let me tell you something from the world of structural engineering.

This is the plan for the Quebec Bridge in Canada, a cantilever bridge. Construction started at the start of the 20th Century. There was a competition to see who get to design and build a bridge because that’s the way the industry works.

The engineer in charge was named Theodore Cooper. Now, originally, the bridge was meant to be 490 meters long but Theodore Cooper changed the specification to make it 550 meters long, mostly because, up in Scotland, the Firth of Forth Bridge, that was the longest bridge in the world at the time, longest cantilever. He wanted this bridge to exceed that, so he made the bridge longer but he did not recalculate the already high stresses being placed on the material of the bridge.

Oh, also, Theodore Cooper refused to work on site. He was down in New York, supposedly overseeing construction from New York. And when it was proposed that somebody should check his calculations, he took that as a personal afront and said, “No, no, no. No, no, that won’t work,” so there was no code reviews happening on this project.

Now, someone was onsite, the young engineer named Norman McLure. By 1907, August 6th, he had started to notice that the steel was bending, getting a lot of stress. Then again, on August 27th, it had got worse.

Cooper was notified down in New York. He did send a telegram back to Quebec. He said, “Place no more load on Quebec bridge until all facts considered - stop.” But he was inferring that the work should stop. He never explicitly said, “Stop the work right now,” so the telegram was ignored and work continued.

On August 29th, 1907, the bridge collapsed. It was shortly before the end of the day. The whistle was just about to blow to signal the end of the working day. There were 86 workers on the bridge and 75 of them died.

Now, something started happening in Canada a few years after this, by 1925. Engineering schools in Canada started holding private ceremonies around graduation time. This was a ceremony that was separate from qualifications. This wasn’t about whether you were qualified to be an engineer. This was called The Ritual of the Calling of the Engineer. You would speak an obligation penned by Rudyard Kipling, which I won’t repeat here because it’s meant to stay within the confines of this ritual.

You would also receive an iron ring. This iron ring would be a symbol of pride of being an engineer, but also a symbol of humility. For the longest time, the myth persisted that the iron itself was made from the steel in the Quebec Bridge. It’s not true, but the Quebec Bridge certainly looms over the idea of the iron ring. You’d wear it on the little finger of your working hand, so it would brush against the paper or the computer keyboard during your working day as a constant reminder of your responsibility as an engineer.

The iron ring.

When we call ourselves engineers, I do have to ask, have we earned it? Do we take our responsibility seriously?

Maybe we don’t call ourselves engineers, but then what do we call ourselves? Does it even matter?

Builders

Well, we could go back to that original metaphor from the ’90s, under construction. Maybe we’re builders. We build things. The web is under construction. We’re the ones constructing it. It’s not so bad, you know, to be the ones literally building the web. It’s kind of awesome when you think about it.

Christopher Alexander, when he was talking about his reason for coming up with A Pattern Language, was because he said:

Most of the wonderful places in the world were not made by architects but by the people.

Maybe we’re at the bottom of the layer stack here as workers just building the web, but maybe we also have all the power — more power than we realize. Our collective power is greater than anything any architect could wield.

Yeah, maybe we’re builders. Maybe we’re bricklayers. I know Simon comes from a long line of bricklayers. It is a noble profession. Think about what our building blocks are, the building blocks of the World Wide Web.

The World Wide Web, I think, is the next great leap forward. We had language, writing, the printing press, and now hypertext in the form of the Word Wide Web. Who gets to build it? We do with this kind of building block: the URL, a link. What an amazing building block that is.

I can make a webpage and put two links on it linking to two different things. That combination of those two links has never existed before in the history of the web. We’ve created something new, link by link, building block by building block, building in layers.

I’m reminded of an apocryphal story may be from medieval times—who knows—a traveler coming across three workers. All three workers are doing the same thing. They’re building. They’re moving stones. They’re putting stones one on top of the other.

The traveler says to the first builder, “What are you doing?”

He says, “Oh, I’m moving stones.”

He says to the second builder, “What are you doing?” 
He says, “I’m building a wall.”

He says to the third builder, “What are you doing?”

He says, “I’m building a cathedral.”

They’re all doing the same task but thinking about it in different ways. Maybe that’s what we need to do. Forget about labels, metaphors, architecture, engineer, building, whatever. Just think about what a privilege it is to be doing this, to embrace the fact that we are the builders. We are the bricklayers.

Today, for example, we’re going to hear from quite an amazing collection of bricklayers that I’m really looking forward to hearing from. I want to hear what they’re building. I want to hear their stories of how they built it, why they built it.

But to do that, I need to stop moving air over these vocal cords and flapping this fleshy piece of meat around in my mouth and just stop talking. Thank you for listening.

Sunday, January 19th, 2020

Mystery Flesh Pit National Park

A Cataloged Archive of Information Relating to the Now Closed Mystery Flesh Pit National Park

Friday, January 10th, 2020

Install prompt

There’s an interesting thread on Github about the tongue-twistingly named beforeinstallpromt JavaScript event.

Let me back up…

Progressive web apps. You know what they are, right? They’re websites that have taken their vitamins. Specifically, they’re responsive websites that:

  1. are served over HTTPS,
  2. have a web app manifest, and
  3. have a service worker handling the offline scenario.

The web app manifest—a JSON file of metadata—is particularly useful for describing how your site should behave if someone adds it to their home screen. You can specify what icon should be used. You can specify whether the site should launch in a browser or as a standalone app (practically indistinguishable from a native app). You can specify which URL on the site should be used as the starting point when the site is launched from the home screen.

So progressive web apps work just fine when you visit them in a browser, but they really shine when you add them to your home screen. It seems like pretty much everyone is in agreement that adding a progressive web app to your home screen shouldn’t be an onerous task. But how does the browser let the user know that it might be a good idea to “install” the web site they’re looking at?

The Samsung Internet browser does ambient badging—a + symbol shows up to indicate that a website can be installed. This is a great approach!

I hope that Chrome on Android will also use ambient badging at some point. To start with though, Chrome notified users that a site was installable by popping up a notification at the bottom of the screen. I think these might be called “toasts”.

Getting the “add to home screen” prompt for https://huffduffer.com/ on Android Chrome. And there’s the “add to home screen” prompt for https://html5forwebdesigners.com/ HTTPS + manifest.json + Service Worker = “Add to Home Screen” prompt. Add to home screen.

Needless to say, the toast notification wasn’t very effective. That’s because we web designers and developers have spent years teaching people to immediately dismiss those notifications without even reading them. Accept our cookies! Sign up to our newsletter! Install our native app! Just about anything that’s user-hostile gets put in a notification (either a toast or an overlay) and shoved straight in the user’s face before they’ve even had time to start reading the content they came for in the first place. Users will then either:

  1. turn around and leave, or
  2. use muscle memory reach for that X in the corner of the notification.

A tiny fraction of users might actually click on the call to action, possibly by mistake.

Chrome didn’t abandon the toast notification for progressive web apps, but it did change when they would appear. Rather than the browser deciding when to show the prompt—usually when the user has just arrived on the site—a new JavaScript event called beforeinstallprompt can be used.

It’s a bit weird though. You have to “capture” the event that fires when the prompt would have normally been shown, subdue it, hold on to that event, and then re-release it when you think it should be shown (like when the user has completed a transaction, for example, and having your site on the home screen would genuinely be useful). That’s a lot of hoops. Here’s the code I use on The Session to only show the installation prompt to users who are logged in.

The end result is that the user is still shown a toast notification, but at least this time it’s the site owner who has decided when it will be shown. The Chrome team call this notification “the mini-info bar”, and Pete acknowledges that it’s not ideal:

The mini-infobar is an interim experience for Chrome on Android as we work towards creating a consistent experience across all platforms that includes an install button into the omnibox.

I think “an install button in the omnibox” means ambient badging in the browser interface, which would be great!

Anyway, back to that thread on Github. Basically, neither Apple nor Mozilla are going to implement the beforeinstallprompt event (well, technically Mozilla have implemented it but they’re not going to ship it). That’s fair enough. It’s an interim solution that’s not ideal for all reasons I’ve already covered.

But there’s a lot of pushback. Even if the details of beforeinstallprompt are troublesome, surely there should be some way for site owners to let users know that can—or should—install a progressive web app? As a site owner, I have a lot of sympathy for that viewpoint. But I also understand the security and usability issues that can arise from bad actors abusing this mechanism.

Still, I have to hand it to Chrome: even if we put the beforeinstallprompt event to one side, the browser still has a mechanism for letting users know that a progressive web app can be installed—the mini info bar. It’s not a great mechanism, but it’s better than nothing. Nothing is precisely what Firefox and Safari currently offer (though Firefox is experimenting with something).

In the case of Safari, not only do they not provide a mechanism for letting the user know that a site can be installed, but since the last iOS update, they’ve buried the “add to home screen” option even deeper in the “sharing sheet” (the list of options that comes up when you press the incomprehensible rectangle-with-arrow-emerging-from-it icon). You now have to scroll below the fold just to find the “add to home screen” option.

So while I totally get the misgivings about beforeinstallprompt, I feel that a constructive alternative wouldn’t go amiss.

And that’s all I have to say about that.

Except… there’s another interesting angle to that Github thread. There’s talk of allowing sites that are launched from the home screen to have access to more features than a site inside a web browser. Usually permissions on the web are explicitly granted or denied on a case-by-case basis: geolocation; notifications; camera access, etc. I think this is the first time I’ve heard of one action—adding to the home screen—being used as a proxy for implicitly granting more access. Very interesting. Although that idea seems to be roundly rejected here:

A key argument for using installation in this manner is that some APIs are simply so powerful that the drive-by web should not be able to ask for them. However, this document takes the position that installation alone as a restriction is undesirable.

Then again:

I understand that Chromium or Google may hold such a position but Apple’s WebKit team may not necessarily agree with such a position.

Listen To Me And Not Google: HeydonWorks

We have to stop confusing the excesses of capitalism with the hallmarks of quality. Sometimes Google aren’t better, they’re just more pervasive.

cough AMP cough

Wednesday, January 8th, 2020

This is Not my Beautiful House: Examining the Desktop Metaphor, 1980-1995 | continent.

From Xerox PARC to the World Wide Web:

The internet did not use a visual spatial metaphor. Despite being accessed through and often encompassed by the desktop environment, the internet felt well and truly placeless (or perhaps everywhere). Hyperlinks were wormholes through the spatial metaphor, allowing a user to skip laterally across directories stored on disparate servers, as well as horizontally, deep into a file system without having to access the intermediate steps. Multiple windows could be open to the same website at once, shattering the illusion of a “single file” that functioned as a piece of paper that only one person could hold. The icons that a user could arrange on the desktop didn’t have a parallel in online space at all.

Thursday, January 2nd, 2020

B612 – The font family

B612 is an highly legible open source font family designed and tested to be used on aircraft cockpit screens.

Available as a web font.

Sunday, December 22nd, 2019

The modern web is becoming an unusable, user-hostile wasteland

If you add another advertisement to your pages, you generate more revenue. If you track your users better, now you can deliver tailored ads and your conversion rates are higher. If you restrict users from leaving your walled garden ecosystem, now you get all the juice from whatever attention they have.

The question is: At which point do we reach the breaking point?

And I think the answer is: We are very close.

Facebook. Twitter. Medium. All desparate to withhold content they didn’t even create until you cough up your personal details.

Monday, December 9th, 2019

Level of Effort | Brad Frost

Brad gets ranty …with good reason.

Saturday, November 16th, 2019

Open UI

An interesting project that will research and document the language used across different design systems to name similar components.

Tuesday, November 12th, 2019

Chromium Blog: Moving towards a faster web

It’s nice to see that the Chrome browser will add interface enhancements to show whether you can expect a site to load fast or slowly.

Just a shame that the Google search team aren’t doing this kind of badging …unless you’ve given up on your website and decided to use Google AMP instead.

Maybe the Chrome team can figure out what the AMP team are doing to get such preferential treatment from the search team.

Friday, October 25th, 2019

The difference between HTML, CSS, and JavaScript | Zell Liew

HTML lets you create the structure of a website.

CSS lets you make the website look nice.

JavaScript lets you change HTML and CSS. Because it lets you change HTML and CSS, it can do tons of things.

Tuesday, October 22nd, 2019

203221 – Web Share API: should prefer URL to text when both available

That unusual behaviour I wrote about with the Web Share API in Safari on iOS is now officially a bug—thanks, Tess!

Wednesday, October 16th, 2019

The Web Share API in Safari on iOS

I implemented the Web Share API over on The Session back when it was first available in Chrome in Android. It’s a nifty and quite straightforward API that allows websites to make use of the “sharing drawer” that mobile operating systems provide from within a web browser.

I already had sharing buttons that popped open links to Twitter, Facebook, and email. You can see these sharing buttons on individual pages for tunes, recordings, sessions, and so on.

I was already intercepting clicks on those buttons. I didn’t have to add too much to also check for support for the Web Share API and trigger that instead:

if (navigator.share) {
  navigator.share(
    {
      title: document.querySelector('title').textContent,
      text: document.querySelector('meta[name="description"]').getAttribute('content'),
      url: document.querySelector('link[rel="canonical"]').getAttribute('href')
    }
  );
}

That worked a treat. As you can see, there are three fields you can pass to the share() method: title, text, and url. You don’t have to provide all three.

Earlier this year, Safari on iOS shipped support for the Web Share API. I didn’t need to do anything. ‘Cause that’s how standards work. You can make use of APIs before every browser supports them, and then your website gets better and better as more and more browsers add support.

But I recently discovered something interesting about the iOS implementation.

When the share() method is triggered, iOS provides multiple ways of sharing: Messages, Airdrop, email, and so on. But the simplest option is the one labelled “copy”, which copies to the clipboard.

Here’s the thing: if you’ve provided a text parameter to the share() method then that’s what’s going to get copied to the clipboard—not the URL.

That’s a shame. Personally, I think the url field should take precedence. But I don’t think this is a bug, per se. There’s nothing in the spec to say how operating systems should handle the data sent via the Web Share API. Still, I think it’s a bit counterintuitive. If I’m looking at a web page, and I opt to share it, then surely the URL is the most important piece of data?

I’m not even sure where to direct this feedback. I guess it’s under the purview of the Safari team, but it also touches on OS-level interactions. Either way, I hope that somebody at Apple will consider changing the current behaviour for copying Web Share data to the clipboard.

In the meantime, I’ve decided to update my code to remove the text parameter:

if (navigator.share) {
  navigator.share(
    {
      title: document.querySelector('title').textContent,
      url: document.querySelector('link[rel="canonical"]').getAttribute('href')
    }
  );
}

If the behaviour of Safari on iOS changes, I’ll reinstate the missing field.

By the way, if you’re making progressive web apps that have display: standalone in the web app manifest, please consider using the Web Share API. When you remove the browser chrome, you’re removing the ability for users to easily share URLs. The Web Share API gives you a way to reinstate that functionality.

Saturday, October 5th, 2019

do you know your tags?

Test your knowledge of the original version of HTML—how many elements can you name?

Friday, October 4th, 2019

Designing a focus style | Zell Liew

A deep dive info focus styles with this conclusion:

The default focus ring works. There are problems with it, but it can be good enough, especially if you can’t dedicate time and energy to create a custom focus ring.

Thursday, September 19th, 2019

An HTML attribute potentially worth $4.4M to Chipotle - Cloud Four

When I liveblogged Jason’s talk at An Event Apart in Chicago, I included this bit of reporting:

Jason proceeds to relate a long and involved story about buying burritos online from Chipotle.

Well, here is that story. It’s a good one, with some practical takeaways (if you’ll pardon the pun):

  1. Use HTML5 input features
  2. Support autofill
  3. Make autofill part of your test plans

At Dynamicland, The Building Is The Computer — Carl Tashian

A look at the ubiquitous computing work that Bret Victor has been doing over the past few years at Dynamicland.

A bit of a tangent, but I love this description of reading maps:

Map reading is a complex and uniquely human skill, not at all obvious to a young child. You float out of your body and into the sky, leaving behind the point of view you’ve been accustomed to all your life. Your imagination turns squiggly blue lines and green shading into creeks, mountains, and forests seen from above. Bringing it all together in your mind’s eye, you can picture the surroundings.

Saturday, September 7th, 2019

samuelgoto/sms-receiver: phone number verification

An interesting proposal to allow websites to detect certain SMS messages. The UX implications are fascinating.

Tuesday, September 3rd, 2019

Bottom Navigation Pattern On Mobile Web Pages: A Better Alternative? — Smashing Magazine

Making the case for moving your navigation to the bottom of the screen on mobile:

Phones are getting bigger, and some parts of the screen are easier to interact with than others. Having the hamburger menu at the top provides too big of an interaction cost, and we have a large number of amazing mobile app designs that utilize the bottom part of the screen. Maybe it’s time for the web design world to start using these ideas on websites as well?