For me, there is an inverse correlation between the amount of alcohol I consume and the degree of control I have over my continued intake. I can have a couple and stop without too much difficulty, but after 4 or 5 it gets sketchy, and past that point I start to blackout. If I had pot to smoke, and I usually did, I would rarely get that far with alcohol. But if I had a couple today, I'd want a couple tomorrow, and a couple the next day...