Stupid Questions

Philip Greenspun on business plans:
I said “Why can’t you show me all of the ways that your product creates value for people. Then, for each value that is generated, show me how you can turn some of that into revenue. Obviously you can’t capture 100 percent of the value that you generate because there would be no consumer surplus, but you can probably capture some. And if you’re not generating value to begin with, you won’t be able to get any revenue at all.”
This is why I didn't want anything to do with companies involved in the 'tech bubble' of '98-'01. If you can't tell me how you are going to make money, why should I invest?

Of course, I'm merely an unsophisticated investor, and therefore not the kind of person who understands these things.