Yep, we got used to random oral exams and blitz writen exams so that doesn't get to us anymore. Btw Jubal I read somewhere that ppl with higher IQ have higher tendancy to fall in those "black holes" you mentioned. Just don't let it get to you. My last depressed phase was half a year ago and it lasted for a whole month. I just kept myself occupied, not thinking much about it and one day I woke up feeling normal again.