It’s ironic, isn’t it? Design is more important and respected than ever, which means we have more agency to affect change. But at the same time, our priorities have been subverted, pushed towards corporate benefit over human benefit. It’s hard to reconcile those things.
Jared’s spot-on takedown of Net Promoter Scores.
(Andy feels this is like criticising GDP, but GDP measures something that actually happened, whereas NPS, like horoscopes or tea-leaf readings, rely on clairvoyance.)
A good analysis, but my takeaway was that the article could equally be called Why it’s tricky to measure Client-side Rendering performance. In a nutshell, just looking at metrics can be misleading.
Pre-classified metrics are a good signal for measuring performance. At the end of the day though, they may not properly reflect your site’s performance story. Profile each possibility and give it the eye test.
And it’s always worth bearing this in mind:
Here’s an interesting metric for measuring performance: take the overall page weight of a URL and divide it by the file size of the screenshot of that URL.
The dreadful headline makes this sound like another pearl-clutching moral panic, but there’s some good stuff in this somewhat hagiographic profile.
Harris is developing a code of conduct—the Hippocratic oath for software designers—and a playbook of best practices that can guide start-ups and corporations toward products that “treat people with respect.” Having companies rethink the metrics by which they measure success would be a start.
A superb illustration of why playing the numbers game and dismissing even a small percentage of your potential audience could be disastrous.
Some good practical advice from Tim on setting a performance budget.
Use rule-based metrics to make sure you haven’t overlooked simple optimizations.
Use quantity-based metrics as guides to help designers and developers make better decisions about what goes onto a page.
Some sensible thinking from Tim on measuring performance gains.
Some good-lookin’ stats from a responsive redesign:
Total page views, a metric we were prepared to see go down with the redesign, are up by 27%. Unique visitors per week are up 14% on average and visits per week are up on average 23%.
Cennydd delivers a slap of common sense to A/B testing. With science!
I suspect David Sleight was hovering over Catherine Holahan's shoulder while she wrote this.