I ask this because I find myself to require allot of time and thinking before I am fully comfortable with a mathematical concept. There's always this feeling of discomfort towards a new concept that I have to vanquish by thinking about it for hours and hours. It's not that I can't apply the concept; it's more that I spend allot of time trying to understanding its every details and implications. What worries me is that once in college, this kind of learning will not be possible. For someone who tries to get a deep understanding of things, is it normal or am I just a slow learner?