His problem (or his wife's) is solvable, even right now. She could use time machine, dropbox works as well, using a versionning system would also work, she could switch to an editor that supports infinte undos, dozens of other solutions exist.

But all these require preparation, settings and some care. It could get better, even 'magical', but it would be an achievement that should not be taken for granted.

Btw we could make a pan for stew that checks if you are adding eggs to it, but no one would want the tradeoffs IMO.