So, Medium tried a new thing on their website in which they render the site in system fonts – San Francisco, Roboto, Segoe – but soon they started getting bug reports from people about Medium showing blocky, pixellated fonts.
I looked again at all the system fonts and none seemed to match any of the descriptions. What was going on? I started asking for screenshots, and eventually a few trickled in.
And, suddenly, I realized I know this font. It was a font I saw on my first PC.
I love this story.