Neither. I'm a ... a ... illiterate that has to rely on my wife for all the assistance I can get.Matthew Yglasias observes that this is no small thing.
Do you have to use a computer to understand how it shapes the country? I think you might. If we had a president who didn't know how to drive a car, that would probably strike us as pretty odd. But I think you could plausibly claim that you don't necessarily have to have a driver's license in order to understand how automobiles shape the country. But that's because we assume that even someone who doesn't have a license has still been in cars sees highways, onramps and offramps, parking lots, quiet winding roads, overpasses, bridges, etc. If you hadn't done any of that stuff, then I think it really would be difficult to understand the implications of the technology.
But while people ride as passengers in cars all the time, I would imagine that someone who doesn't use a computer doesn't peer over the shoulder of his staff either.