How much economics do we need to know?
For most of history, humans remained ignorant for lack of access to information. Only the rich had books and knew how to read. And the books they read told them precious little about a world that was still largely undiscovered.
Now, for the first time, we can learn practically anything we want, at least in the realm of formal knowledge. We're limited only by our own sloth. So, should more of us stir ourselves to nail down the fundamentals of... econ? Interesting back-and-forth on this in the W.S. Journal.