I never memorized my times tables and do just fine with graduate level mathematics. If you ask me 9 * 7 I still do 10 * 7 = 70 - 7 = 63 in my head; but, I seem

I never memorized my times tables and do just fine with graduate level mathematics. If you ask me 9 * 7 I still do 10 * 7 = 70 - 7 = 63 in my head; but, I seem to handle spectral graph theory just fine.