[sizzzzlerz]

To really understand it's changes, you first need a book with pictures of the valley from the 1940's to the 1960's. I don't have such a book but I've seen a number of pictures when the valley was all orchards. Then you overlay those with modern day pictures and you see how places like Sunnyvale, Mountain View, and Palo Alto transformed into large cities that essentially removed those trees and replaced them with buildings, houses, and roads. I could study those pictures for hours.