Grading is difficult

Dear nerds,
So as the TA for Evolution, one of my responsibilities is to grade the assignments that the students turn it. I didn't realize that this could be difficult. How hard could it be? If the student doesn't put the correct answer, its wrong. If they do, its right. Well, turns out grades are not black and white, and not just because pencils write in gray.
Turns out you have to take into account what the student was meaning to say. This can be hard, mainly because sometimes what they say doesn't answer the question, but the attempt can be worth something. But at the same time, if you give credit to someone who has the right answer but got to it in a round about way, you get in trouble. I suppose the main thing is to grade in the style of your boss. If she would have given full credit and you only give half... trouble. If she would have given no credit because of how they got to the answer but you give half...trouble.
Ha, I guess what I'm saying is I'm not going to complain about nit-picky grading points anymore. Simply because grading is not nearly as easy to do as it is to complain about.