Most political philosophies work better as theories than in practice. Take communism, for example: If you’re struggling under a different political model, communism has some truly splendid talking points, and if you think otherwise, you’ve lost the plot. There’s a reason why it’s still so appealing to millions of revolutionaries. The problem, of course, is that communism is utterly dysfunctional in the real world. By many metrics, it’s the most destructive political system in history. But despite its (considerable) track record of death, destruction, and devastation, its popularity continues. No matter how many times it crashes and burns — no...