I think it is self selection in action. Its not so much pot, but the general disposition that makes us smoke it, which is recognizable to each other because it is similar. One of those social things we all use to decide if we dig someone or not.
http://en.wikipedia.org/wiki/Self-selection
That said, bacon fo sho.
http://en.wikipedia.org/wiki/Self-selection
That said, bacon fo sho.