Pretext and the Problem I Didn't Know Existed

I have been building web and mobile UI for a while and… I thought I had a decent reads on how browsers actually work under the hood. Then I came across Pretext last week and found out I’d been wrong about something for years without even knowing to question it. So basically, every time a browser needs to know how tall a block of text is, reading that measurement can trigger a layout recalculation,…