[gumbo72]

I'd like to see a 4-week programmer write stuxnet (in 500Kb, of course)

[Tichy]

Even assuming it is hard (I don't know, haven't looked into it), it wouldn't disprove the point. Sure there are hard problems in programming. But normal programmers will never be exposed to them. There are also hard problems in medicine, like curing HIV, but most physicians will never attempt them.