system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What makes counterfeiting dollar bills hard enough that everyone doesn't do it?
gpt
Dollar bills cost the US Government $0.06 to make, with a huge investment in hugemongous equipment.  Making them yourself for $0.50 would be a a challenge.  They are made of special fabric, not really paper, with special presses that give them a distinctive feel.  People are very familiar with the look an feel, they will notice the slightest flaw. The penalties for counterfeiting are very severe if you are caught. If it costs you $2 to make a good enough fake, that doesn't make sense.

TL;DR it's not worth it.