A co-worker and I were grousing about dirty dishes left in the office sink, and this proverb came to mind: A courtyard common to all will be swept by none. No philosophy degree is needed to understand that. Look at litter along the streets. Dog poop in the park. Paper towels on the restroom floor. Not my problem. Not my job. I didn't put it there. Why doesn't somebody else take care of that? It turns out that there's an economic theory called...
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