How cartography made early modern global trade possible.
Maps and legends. Beautiful!
How cartography made early modern global trade possible.
Maps and legends. Beautiful!
I was in Berlin for most of last week, and every day was packed with activity:
By the time I got back to Brighton, my brain was full …just in time for FF Conf.
All of the events were very different, but equally enjoyable. It was also quite nice to just attend events without speaking at them.
Indie Web Camp Berlin was terrific. There was an excellent turnout, and once again, I found that the format was just right: a day of discussions (BarCamp style) followed by a day of doing (coding, designing, hacking). I got very inspired on the first day, so I was raring to go on the second.
What I like to do on the second day is try to complete two tasks; one that’s fairly straightforward, and one that’s a bit tougher. That way, when it comes time to demo at the end of the day, even if I haven’t managed to complete the tougher one, I’ll still be able to demo the simpler one.
In this case, the tougher one was also tricky to demo. It involved a lot of invisible behind-the-scenes plumbing. I was tweaking my webmention endpoint (stop sniggering—tweaking your endpoint is no laughing matter).
Up until now, I could handle straightforward webmentions, and I could handle updates (if I receive more than one webmention from the same link, I check it each time). But I needed to also handle deletions.
The spec is quite clear on this. A 404 isn’t enough to trigger a deletion—that might be a temporary state. But a status of 410 Gone indicates that a resource was once here but has since been deliberately removed. In that situation, any stored webmentions for that link should also be removed.
Anyway, I think I got it working, but it’s tricky to test and even trickier to demo. “Not to worry”, I thought, “I’ve always got my simpler task.”
For that, I chose to add a little map to my homepage showing the last location I published something from. I’ve been geotagging all my content for years (journal entries, notes, links, articles), but not really doing anything with that data. This is a first step to doing something interesting with many years of location data.
I’ve got it working now, but the demo gods really weren’t with me at Indie Web Camp. Both of my demos failed. The webmention demo failed quite embarrassingly.
As well as handling deletions, I also wanted to handle updates where a URL that once linked to a post of mine no longer does. Just to be clear, the URL still exists—it’s not 404 or 410—but it has been updated to remove the original link back to one of my posts. I know this sounds like another very theoretical situation, but I’ve actually got an example of it on my very first webmention test post from five years ago. Believe it or not, there’s an escort agency in Nottingham that’s using webmention as a vector for spam. They post something that does link to my test post, send a webmention, and then remove the link to my test post. I almost admire their dedication.
Still, I wanted to foil this particular situation so I thought I had updated my code to handle it. Alas, when it came time to demo this, I was using someone else’s computer, and in my attempt to right-click and copy the URL of the spam link …I accidentally triggered it. In front of a room full of people. It was midly NSFW, but more worryingly, a potential Code Of Conduct violation. I’m very sorry about that.
Apart from the humiliating demo, I thoroughly enjoyed Indie Web Camp, and I’m going to keep adjusting my webmention endpoint. There was a terrific discussion around the ethical implications of storing webmentions, led by Sebastian, based on his epic post from earlier this year.
We established early in the discussion that we weren’t going to try to solve legal questions—like GDPR “compliance”, which varies depending on which lawyer you talk to—but rather try to figure out what the right thing to do is.
Earlier that day, during the introductions, I quite happily showed webmentions in action on my site. I pointed out that my last blog post had received a response from another site, and because that response was marked up as an h-entry, I displayed it in full on my site. I thought this was all hunky-dory, but now this discussion around privacy made me question some inferences I was making:
That second inferrence of mine—that publishing in a particular format somehow grants permissions—actually has an interesting precedent: Google AMP. Simply by including the Google AMP script on a web page, you are implicitly giving Google permission to store a complete copy of that page and serve it from their servers instead of sending people to your site. No terms and conditions. No checkbox ticked. No “I agree” button pressed.
Anyway, when it comes to my own processing of webmentions, I’m going to take some of the suggestions from the discussion on board. There are certain signals I could be looking for in the linking post:
metadeclarations that say
Each one of these could help to infer whether or not I should be publishing a webmention or not. I quickly realised that what we’re talking about here is an algorithm.
Despite its current usage to mean “magic”, an algorithm is a recipe. It’s a series of steps that contribute to a decision point. The problem is that, in the case of silos like Facebook or Instagram, the algorithms are secret (which probably contributes to their aura of magical thinking). If I’m going to write an algorithm that handles other people’s information, I don’t want to make that mistake. Whatever steps I end up codifying in my webmention endpoint, I’ll be sure to document them publicly.
While a geographical map is helpful if you want to find your way around the world, a population cartogram is the representation that we need if we want to know where our fellow humans are at home.
A beautiful visualisation of shipping routes and cargo. Mesmerising!
You can see movements of the global merchant fleet over the course of 2012, overlaid on a bathymetric map. You can also see a few statistics such as a counter for emitted CO2 (in thousand tonnes) and maximum freight carried by represented vessels (varying units).
Hot nuclear blasts in your area.
(like Eric’s HYDEsim)
This is a fascinating way to explore time and place—a spyglass view of hundred year old maps overlaid on the digital maps of today.
A fascinating bit of cartographic reverse engineering, looking at how Google has an incredible level of satellite-delivered building detail that then goes into solving the design problem of marking “commercial corridors” (or Areas Of Interest) on their maps.
I quite like this proposal for
geo element in HTML, especially that it has a fallback built in (like
video). I’m guessing the next step is to file an issue and create a web component to demonstrate how this could work.
That brings up another question: what do you name a custom element that you’d like to eventually become part of the spec? You can’t simply name it
geo because you have to include a hyphen.
When it seems like all our online activity is being tracked by Google, Facebook, and co., it comforts me to think of all the untracked usage out there, from shared (or fake) Facebook accounts to the good ol’ sneakernet:
Packets of information can be distributed via SMS and mobile 3G but also pieces of paper, USB sticks and Bluetooth.
Connectivity isn’t binary. Long live the papernet!
In this English language alternative to latitude and longitude coordinates, the Clearleft office is located at:
Everything you never wanted to know about conveying elevation information on maps, delivered in Peter’s always-entertaining style and illustrated with interactive examples.
OpenGeofiction is a map of an imaginary world, created by a community of worldbuilders. You can take part in this project too.
It’s UX London week. That’s always a crazy busy time at Clearleft. But it’s also an opportunity. We have this sneaky tactic of kidnapping a speaker from UX London and making them give a workshop just for us. We did it a few years ago with Dave Grey and we got a fantastic few days of sketching out of it.
This time we grabbed Jeff Patton. He spent this afternoon locked in the auditorium at 68 Middle Street teaching us all about user story mapping. ‘Twas most enlightening and really helped validate some of the stuff we’ve been doing lately.
This is such a simple little adjustment, but I think it’s kinda brilliant: tweaking the display of your site’s maps to match the season.