Software That Fixes Itself

It makes me wonder if the software can generally "understand" something is wrong, or if it just has a bunch of modules that look for various exploits (say a buffer overflow attack, a XSS attack).

If it's the latter, it just seems like a version of lint that runs on the binary and produces patches on the fly. Granted, that's still a big achievement, but it still relies on people for "unknown" attacks.

Just don't make it too smart, or it'll eventually learn that it doesn't need to listen to its imperfect human masters...