Trickle around economics

trickle

While at O’Hare this morning, a curiously typical financial transaction occurred.

[Nick throws a dollar bill in my lap]

Michael: “What’s this for?”
Nick: “You gave me a dollar for the vending machine last night.”
Michael: “Oh yeah, I forgot.”

[Michael hands the dollar bill to Tim]

Tim: “What’s this for?”
Michael: “I owe you some money for the cab driver’s tip.”
Tim: “Oh whatever.  No big deal.”

[Tim hands the dollar bill to Nick]

Nick: “Why are you giving this to me?”
Tim: “I owed you change from dinner in Kennesaw.”

[Nick puts the dollar back in his wallet]

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