-But economics isn't, fundamentally, about money. Economics, like life itself, is about _trade-offs_. Any decision you make—whether it's to exchange money for some material good, or move to a different city, or transition to the other gender, arises out of the tension between your need for that choice and your ability to do without, a tension that is resolved into a decision by the calculus of cost: of how much of everything else in life would need to be sacrificed in order to achieve it, whether the sacrifice be extracted in money, in time—in social ostracism—in existential anguish—in blood.
+But economics isn't, fundamentally, about money. Economics, like life itself, is about _trade-offs_. Any decision you make—whether it's to exchange money for some material good, or move to a different city, or transition to the other gender, arises out of the tension between your need for that choice and your ability to do without, a tension that is resolved into a decision by the calculus of opportunity cost: of how much of everything else in life would need to be sacrificed in order to achieve it, whether the sacrifice be extracted in money, in time—in social ostracism—in existential anguish—in blood.