I asked Claude to fix a function. It rewrote three.

I asked for a null check. It added five guard clauses, two of which protected against states the type system already prevents.

I asked for one comment. It wrote a JSDoc block longer than the function it described.

Every AI coding tool I've used does the same thing. The default move is to add. Most of the time, the right move is to delete.

Five things AI keeps adding that I delete on sight: