How do you know you’re looking at an old website?

While browsing Mastodon late one night, I came across this excellent blog post called HTML is all you need to make a website.

A few years ago I was doing policy research in a housing benefits office in London. They are singularly unlovely places.

No, but the author argues that he (and most people) don't perceive many of the details that designers often spend time pining over and perfecting. Some good comments, too.