The cover and dust jacket summary are, to put it kindly, misleading. It looks like an airport book for businessmen. But this is not an economics book. And it isn't really about entrepreneurship either.
It's a book about autism, which you can only really find out by reading it. But that's okay because it's still pretty good!
Cowen's main point is that the stigma placed on people with autism is just plain wrong on the facts. He argues that every person, because of their unique brain, thinks a little differently. And we need to better appreciate the "neurodiversity" that leads to different types of people, including autistics.
In Cowen's reckoning, many autistics are exceptionally adept at certain skills--like ordering bits of information, developing expertise in very refined areas, and working with numbers--that are increasingly important on the Internet and in an information economy. And in fact many very successful people fall somewhere on "the autism spectrum." So, he says, don't make such a big deal about people who are different from you. Chill out and appreciate their upside.