[Mister_X]

Hmm, I was selling and installing a lot of Cell Phones in Silicon Valley in 1983 (C-Tell Cellular, Santa Clara), and we had an office in Sacramento that was doing even better than I was sales wise.

To characterize the nearly ten years of cell phone growth as "virtually zero" makes me seriously question the authors fact checking and thought process.

To whit: "While American cell-phone usage has grown from virtually zero in 1992 to virtually 100 percent by 2008"

[uep]

That's anecdotal evidence. My anecdotal evidence is that I lived in a suburb of a major city on the east coast, and no one I knew had a cellphone until probably the mid-90s.