Voting Against my best interest

For some reason, this story from deep within my memory banks rose to the surface recently.  One semester at NMSU, I was in a Differential Equations class. This was a class that was mostly comprised of Physics Majors like my friend B-Gill, and Engineering Majors like myself.  There might have been a math major or two, although I don't think it was a requirement.

Anyway, the Prof decided to let the class decide how the final exam would focus: Physics problem heavy or Engineering problem heavy.  I think that meant that more questions would be Physics-oriented than straightforward Engineering problems.  

I was struggling with the Physics type problems but doing fine with the Engineering ones.  Most of the Physics students could go either way, including B-Gill.  When it came time to vote, I don't remember how close it was, if we were told at all, but B-Gill chose Physics.  

That our exam was Physics Heavy cost me an A.  Meanwhile, B-Gill, who had missed some exams because of sickness, had a chance to score an A for the semester just by getting an A on the last and most important test of the class.  

I don't know why this came up in my MindFeed upon waking up in the middle of the night as I often do.  I'm sure I displayed some disappointment at B-Gill for not casting a vote to help me out.  He was gonna get an A no matter what the questions were.