argh i'm so annoyed. I just spent the whole week doing my head of class report, but was in such a rush in the last half hour before the deadline, i forgot to add 3 vital measurements to some diagrams i made, which mean my results section is actually missing some results, which is probably gonna get me a B...i'm so annoyed, to have gone to all that effort, and then miss out something which would have taken 30 seconds to add!