> Oh, you didn't learn to do quickly calculate square roots in your head? Instead you spent that time on learning about relativity in high school physics class.

> Oh, you didn't learn to do quickly calculate square roots in your head? Instead you spent that time on learning about relativity in high school physics class. The math examples always get me, because there's a level of understanding missing here that, yes, you should still have: You may not be able to do the square-root yourself, but you should have a good-enough understanding of what a square-root is that if you enter into a calculator the square-root of a 6-digit number and get back another 6-digit number, you should know immediately that's wrong, and double-check you entered it correctly. Part of the concern a lot of us have is people who not only do not have that understanding, but that think it's unnecessary to get that understanding, and skip over it entirely.