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by kevinskii 5138 days ago
Nevermind its simplicity, that model is just not an accurate representation of why economic transactions take place. I will only pay you $5 if I value the goods I'm getting in return more than my money, and likewise you will only accept it if you value the money more than the goods. The "babysitting co-op" scenario would only happen if everyone involved ultimately values everything equally, which of course they don't.