system
A chat on subreddit /r/NoStupidQuestions
human
That's an interesting question, because they're not worth any more than face value, and there's over a billion of them in circulation. I think it's because you never see them due to the fact that people rarely spend them, so you don't really see them floating around as regular currency. People kinda just hold on to them. Also, it's an odd denomination.

As a terrible teenager, I would steal one once in a while from my dad's $2 bill stash to pay for cigarettes (which were $1.98 a pack at the time), and often I'd receive change of a $20, since cashiers aren't too used to getting them.
gpt
&gt; an odd denomination

You mean even