Here’s the first fun, important (and pretty obvious) historical fact: people didn’t always sit on chairs. Stools, benches, other hard and backless surfaces, sure. But not chairs. Chairs, since their very earliest inception (they became popular in the 16th century), have always been a little special, what with their legs and their backs and all, and so were reserved mainly for kings and emperors and heads of state.
Which leads us, then, to another fun, important (and possibly dubious) historical fact: since the common people got their hands on them, it’s been a steady race to make chairs as goddamn comfortable as possible.
A good chair is one you can stay in for hours and hours and hours, watching telly, poring through detective novels, newspapers or websites.