I go to bed at 21:30 and am allowed to be on the computer at 5:30, but if I go to bed at 21:00, or half an hour early, I'm allowed on the computer at 5:00. And this goes down and down, so long as I'm getting 8 hours of sleep. And I went to bed at 16:00 and woke up at 0:30 (midnight plus a half hour), which actually 8 and a half hours of sleep and I went to bed 5 and a half hours early. By that logic, should I be allowed to use computer right now, at 1am?