Most of economics can be summarized in four words: “People respond to incentives.” The rest is commentary.
A few lines of reasoning can change the way we see the world.
Colleges should offer lots of optional life-enriching experiences, like intramural basketball and a place to sunbathe. But reading books, like basketball or sunbathing, is a leisure activity, neither more nor less admirable than any other, and colleges should not pretend otherwise.
But when something is easy to imagine, it’s often because you’ve failed to imagine it in sufficient detail.
The chief merit of the price system is that it makes effective use of information that is not available to any single decision maker. When the price system is overridden, information is discarded. When information is discarded, resources are misallocated. When resources are misallocated, prosperity suffers. If you’re trying to make people prosperous, relying on prices is your best strategy.
If you support protectionism because you think it’s good for you, you’ve probably just got your economics wrong. But if you support protectionism because you think it’s good for your fellow Americans, at the expense of foreigners, then it seems to me you’ve got your morals wrong too.