Forgot to mention--I had to explain to my friend that that was the trick. If you only open the door for attractive women, they catch on and you look like a jackass. If you hold open the door for unattractive women, or for men, or anyone within X feet, no one ever realizes what you're doing. Or, if they do, they don't mind as much.I don't hold open doors specifically for women, I hold open doors (or cede a passageway) to everyone.