Comment by taylorius

Very true! Though biological systems are also vulnerable to resources running out. Also, biological systems are frequently stupendously complex, as well as being robust (contrary to the article's claim).

At a guess, I'd think the difference is to do with the shape of the fitness landscape. If things are failing, or getting attacked and disabled all the time, robustness will result. Whereas a rare but serious failure is much less likely to be manageable.

Then again, perhaps evolution / god is just a better designer than us!