I've still got a chip on my shoulder about it (or, maybe... some other humiliation thing going on). From what I could tell, this was a basic general ed requirement - people getting English degrees were taking it, and passing, but somehow I could not get it. It was quite a depressing period in my life, and for the life of me I still don't understand how so many people can grasp something apparently so basic, yet I'm stymied by it. Furthermore, why is "if a=b and b=c then a=c" stye logic apparently so difficult to others; people were dropping out of logic 101 saying it was "too hard", but apparently calculus is 'easy'?