We are all communists with our closest friends, and feudal lords when dealing with small children. It is very hard to imagine a society where this would not be true. The obvious question is: If we are all ordinarily moving back and forth between completely different systems of moral accounting, why hasn’t anybody noticed this? Why, instead, do we continually feel the need to reframe everything in terms of reciprocity? Here we must return to the fact that reciprocity is our main way of imagining justice. In particular, it is what we fall back on when we’re thinking in the abstract, and
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