How so? It's a testable factual statement about the world. Things are worth what someone's willing to pay for them, and the market value of a good idea is withi

How so? It's a testable factual statement about the world. Things are worth what someone's willing to pay for them, and the market value of a good idea is within a rounding error of nothing. It's not like it's impossible to sell an idea, and the world is full of self-styled idea men who are happy to do so, but buyers are thin on the ground.