I'm working on a unlimited time final exam. There is a problem that I have been thinking about for the last three days but I still couldnt get it. It is worth about 15% of the final and the final is 35% of my grade. I could work on the final for another 5 days before I turn it in. Now the question is whether I should give up on it and turn in the final right now. I have to say that this has never happened to me before. I was always able to figure out every single problem on a unlimited time final, maybe after a lot of effort though. But this time I suddenly feel that I have had enough and would like to end this right now. But I do have a perfect major gpa to date and I would like to keep it that way. I remember that twofish said people with perfect gpa tend not to be good with damage control and maybe he is right. Somehow I feel it is extremely wrong for me to give up at this point but on the other hand I am exhausted and actually sick. This is probably not realistic but I am hoping someone could tell me what to do. I have never been faced with this before..