If Google becomes a knowledge engine, where will they get all this knowledge? By "searching" our sites and scraping our content? That seems rather hypocritical to me. I'm feeling the same sentiment in these comments. Looks like brighter days ahead for BING!
Google has been making questionable choices from the start...once they got big enough, everything they see, they want to be. They're not satisfied with being the #1 search, they also wanted to be a payment portal, start page, social network and dozens of other non search related services, many of which lived only a short life... I think the DARPA influence is clouding what their true vision should be.
I'm surprised there isn't a Google 'rock band' yet.