IMHO, no math makes sense. So metric, whatever our system is called, and anything else that involves numbers is gobbldeygook in my brain. There's a reason I'm a Lawyer and not a CPA...or a Doctor. Although, that's my fantasy job...I just got a new client, 1st year out of his MD/PhD program in Dermatology and his salary is $550k per year....WTF??????!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!