Yes, bipolar = manic depression. You're probably right. Without being too matter-of-fact (this is his Dad we're talking about), I would assume that the reason he thought he could stay up for two weeks was because he wasn't in his right mind. It would be quite typical of someone in a manic phase to do something like that. Then again, sleep is supposed to be important for your mental health and if you're susceptible to mental health problems (you may not know you are) then perhaps lack of sleep could be the last straw.