[thoughtexplorer]

To the OP's point, how does one scientifically determine that to be causal?

[tw04]

I couldn't tell you. What I can tell you is a normal functioning adult who was a casual drinker became an alcoholic essentially overnight. While obviously anecdotal, that seems pretty obviously causal to me.

[dwaite]

Like most studies of human behavior and physiology, it's quite easy to imagine unethical ways to test it