"functional" is a low bar - impairment in memory and cognition creeps up on you, and it's possible to boil like a frog until the onset of liver failure and perm

"functional" is a low bar - impairment in memory and cognition creeps up on you, and it's possible to boil like a frog until the onset of liver failure and permanent neurological damage (eg delirium tremens) dispels that illusion.