"
Stop being engineers, real scientists would be finding out why there is a direction".
No dude, there's no science at all -- math is savvy and sufficient enough to conclude and judge. Forget the math, just use trivial elementary school arithmetic -- of course if you're savvy enough to do that.
Adding/Subtracting 5-digit arbitrary numbers without using calculator AND/OR paper-pen trains memory and logic.
No dude, there's no science at all -- math is savvy and sufficient enough to conclude and judge. Forget the math, just use trivial elementary school arithmetic -- of course if you're savvy enough to do that.
Adding/Subtracting 5-digit arbitrary numbers without using calculator AND/OR paper-pen trains memory and logic.