Hair in the book

There is a common joke in my country:

Q: Why aren’t you studying for your exams?

A: I can’t. I found a hair in my book and now I can’t open the book anymore because of the disgust.

I had a very similar experience few days ago while solving problems from the competition I mentioned earlier. From the very beginning, I tolerated poor English, wrong problem statements, but that day I found out that one of the problems in the list was trivial. It required absolutely no imagination, knowledge or idea whatsoever. Combined with an ad hominem argument I found out about the competition’s organizer, it made me close my notebook and toss the problem set in the wastebasket. I know it is silly, but it seemed to me that one trivial problem spoiled it all to me – now I would seek for triviality in every other problem – challenge would be ruined for good.