I had difficulty with arithmetic in school, while calculus was a breeze. I had difficulty with pointers initially while recursion was a breeze. Anyone knows any

I had difficulty with arithmetic in school, while calculus was a breeze. I had difficulty with pointers initially while recursion was a breeze. Anyone knows any existing neuroscience that explains such anomalies. I would be glad parse it. Oh, I can write poetry but I have trouble spleing.