It's a metaphor, my god. You want a less technical version? Neurology is like a farmer analyzing his soil to figure out it's pH and NPK content to determine what crops will go best. Psychology is studying decades worth of Farmers Almanacs. The point is, only one deals with hard, definitive numbers.

I will grant that my view is a matter of opinion, but it is my firm belief that any science that can not answer it's own questions with solid, irrefutable, numerical answers is an undeveloped science.

You may take that as an insult, in which case 1. It's not meant as one, and 2. Get over yourself. It's an observation. I'm not saying these fields aren't important and won't eventually develop far enough to have such answers, but as they are, right now, they are filled with deficiencies.

Because there are no hard, irrefutable, numerical answers, these fields inherently invite biased studies with conclusions searching for evidence rather than the other way around. And while this may not be the norm, it absolutely exists and can be used to justify anything. Then other studies cite that study which cites that study, and on and on. And since it can't just be disproven with an equation, its much harder to refute and correct.

It's educated guesses. Maybe some day they won't be guesses, just like we don't guess that 1+1=2 or that oxygen and hydrogen can combine to make water; but for right now, they're guesses. And no amount of saying that's offensive to those who study it will change that.