10:53Long video · 10 oddities
The Secret Purpose of 10 Things You Use Every Day
Ten everyday details that look like decoration or mistakes, from the dots on a windshield and the arrow by your fuel gauge to the hole in an airplane window and the tiny pocket on your jeans, each explained by the job it really does. The page goes further than the video: what the patents and standards say, which popular explanations are wrong, and why four very similar holes do four unrelated jobs.