It does, the world runs on trust. It has to. If we loose all trust we're done for.
Money is simple. Don't let them fool you.
All money is just a record. An accounting. A way to keep track of who is owed how much.
The cash in your wallet is worthless in and of itself. It only serves as a record that society owes you something. It's a promise to pay real value. Since it is trusted to some degree it is easy to find someone who will take it in return for what they have. Then that person has a record that society owes him