Reminds me of this joke: An economist and a normal person are walking down the street together. The normal person says “Hey, look, there’s a $20 bill on the sid

Reminds me of this joke: An economist and a normal person are walking down the street together. The normal person says “Hey, look, there’s a $20 bill on the sidewalk!” The economist replies by saying “That’s impossible- if it were really a $20 bill, it would have been picked up by now.”