when did the definition of 'mistake' change to encompass actions done on purpose? a mistake is when your data is invalid because you did the math wrong, not when all your data is simultaneously false and plagiarized.
i don't mean to disagree with the notion that his entire life shouldn't be ruined over one incident at a science fair when he's a teenager, but let's not make it sound like this is a careless blunder that could happen to anybody.