Personally, I think the Stuxnet work is comparable to a Rube Goldberg contraption.

So you could ask, is a RG machine more sophisticated than say a computer - maybe not on a strictly technical level, but again without a metric, it's all about how we feel about it.

Anyways, I thought it was a great writeup that explains at least one aspect of what sophisticated software is, in a language most anyone could understand.