Contracts are to business what skeletons are to people. They explain something of the raw structure, but little more. (Also, if you find yourself looking at it, something has gone wrong.)

Every time I have taken investment, I have seen it as a commitment to see a venture through. Maybe it works, maybe it doesn't, but I am going to give it all I have. So no, I don't think, "gosh, I found something more fun to do," is a legitimate reason for walking away from a startup. If that's how somebody thinks, then they are not cut out for starting a company, because there are always points where almost anything else will be interesting or appealing.

Fellowships are different. I'm advising a new fellowship program right now and, like all education, it's seen as an opportunity to help someone learn. We expect a certain percentage of people to go on to do the thing we want people to do, but if not they'll be taking the knowledge and doing something else, which is also fine.

My concern here is really with the system. If we are pressing money upon people who aren't suited for it, then something's pretty wrong. Nobody should be "trying a startup for a bit".