I say I don't revise, and people often think I'm exaggerating/lying - I'm not lying! I just don't revise! I don't find revision effective for me; once I thoroughly understand something in a lesson I will remember it, so revising just confuses me more as it makes me doubt myself when I understand things. I am one of those very irritating people who gets A*s with no real effort and no revision - so, no, actually, just because someone does well does not mean they spend time secretly revising. Lose the judgemental attitude!