Google probably increases my productivity as a programmer by a factor of 100. I can't imagine what I would do without it. I remember reading programming books when I was much younger, and the rate of information gathering was orders of magnitude slower.

And that's just programming, a relatively niche use of Google, not to speak of any other occupation or task that you might use it for, and that's just google search, not even chrome or maps or... Google has revolutionized the world.