Welcome to real world pal. Do you think we have test countries we can perform scientific tests on? A time machine to go back and change a policy to see how it effects the result???....LOL
The fact of the matter is, in the political realm all we have is correlation.
I wish I had a dime for evey time some post grad student uttered that silly line "correlation does not equal causation!"...thinking how clever he is trying to shut down an argument..LOL
I'm about to go pick up my kids at school. I sure hope my car is in the garage where I parked it? I mean how could I "KNOW" that.???The fact that I left my car in the garage did not cause my car to be there....LOL