Who is Neil Stephenson?

Tom Bissell's classic take, from the NYTimes review of Stephenson's excellent 2011 novel Reamde, where he pictures novelists as "unannounced visitors":

"Neal Stephenson, on the other hand, shows up smelling vaguely of weed, with a bunch of suitcases. Maybe he can crash for a couple of days? Two weeks later he is still there. And you cannot get rid of him. Not because he is unpleasant but because he is so interesting. Then one morning you wake up and find him gone. You are relieved, a little, but you also miss him. And you wish he’d left behind whatever it was he was smoking, because anything that allows a human being to write six 1,000-page novels in 12 years is worth the health and imprisonment risk."