Well I didn't assume he's not supposed to touch the computer... in fact, I would be shocked if that were case, seeing that kids are on the computer these days from 2-3 years old (those are the kids that at 12 years old are happily building their own networks). And the question of deleting files is not necessarily a matter of being inconsiderate... I've taught a whole lot of adults who managed to delete needed files - and being inconsiderate was the last thing on their minds.