I was a very slow learner. My IQ seemed to be reduced to my shoe size. In fact I think I was one of the stupidest people ever to come to AA. I thought about starting my own fellowship, Slow Learners Anonymous, but the initials were already taken..
In reality, I have never seen any one that was too stupid to get sober. I have seen quite a few who were too clever though.
Of course I never suffered any drain bamage.