Obsolescence

What are kids going to sit on at the dinner table once phonebooks are obsolete?

Are phonebooks obsolete? Most nearly. I search Google Local before I pick up the phonebook. Heck, I don't even have a phonebook in my apartment. That shouldn't be surprising though; I don't have a manual can opener. How is it that I prefer a manual can opener to an electric one? Shouldn't an electric model supplant every manual tool?