This is what Dr. Paul Kedrosky says about KP:

You have to give KP partners credit, especially John Doerr: They never see a Next Big Thing that isn't waaay bigger than the Last Big Thing. Some cases in point:
The Internet:
John Doerr (1997-2000): "The Internet is the largest legal creation of wealth in the history of the planet."

Mobile
John Doerr (2005): "[The cell phone boom will be] ultimately be more important and will likely offer a larger wave of investment opportunity than the personal computer."

Cleantech
Ray Lane (2006): "This is bigger than the Internet, I think by an order of magnitude. Maybe two. I'm taking the entire energy industry."