Most innovations, unfortunately, actually increase the net costs of the healthcare system. There's a few, particularly having to do with chronic diseases, that are an exception. If you could cure Alzheimer's, if you could avoid diabetes - those are gigantic... ...
In terms of mathematics textbooks, why can't you have the scale of a national market? Right now, we have a Texas textbook that's different from a California textbook that's different from a Massachusetts textbook. That's very expensive.
