As with Scott Sumner, I can’t simply link to every good post at Modeled Behavior. Otherwise, you should just be reading Modeled Behavior. Karl Smith asks us to imagine the ideal citizen, “Citizen X“, who maximally produces positive externalities without imposing costs on others. We might also call him “sucker”, or “sap”, but let’s not insult the hand that feeds us. I don’t think the idea gets much attention in the first-world, but I imagine it did under communism. I imagine the same would be true for Fnargocracy. As I note in a comment at M.B, this topic should be relevant for immigration policy.