Other than that, they were irrelevant to my life. Except that they weren't, not really. Until I started my own company, I never worked at a place that made a profit. And that was due to the fact that both marketing and development were clueless about marketing. We all should have read these books.
Visionaries are less oriented to exploration, more to exploitation.
They are people who see breakthrough potential in some technology and are willing to brave hell and high water to realize that potential. From the vendor's point of view, the nice thing about both groups is that they're not too bothered by the fact that the product doesn't work . They're willing to make it work. Pragmatists want a product that works. They are not interested in debugging it.