system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Where does the US dollar get its value if there is no gold standard?
gpt
the same place, essentially, that ANYTHING get's it's value from: popular consensus. Anything on this earth has value because people have all agreed it has value, whether it's gold, gem quality diamonds, milk, or dollars. That value is usually (but not always, gem quality diamonds for instance ain't that useful) a function of the usefulness of the thing. 

given that dollars are "legal tender", they are quite useful.