How much vodka does it take to get drunk?
And another would be that there is never enough. If drunkeness is what a person seeks in the jug, it is easy to find, few go there for that purpose. Escape from real problems, escape from pain, real or imagined is often a drtving force. An escape into oblivion is often better then a single glimpse at reality. Looking into the mirror at reality takes courage that no booze and no drug can substitute for. Some can seek and find an escape in an ounce, others may need a pint or more. It is not how much is needed to get drunk, it is always a question of is there enough available to escape.