It is not always by plugging away at a difficulty and sticking to it that one overcomes it; often it is by working on the one next to it. Some things and some people have to be approached obliquely, at an angle.
We'd go out in Larry's hippie van and drive out all around Dallas. He loved Chinese food, he'd go in and say. Remember me Major Nelson, me and my friends here are making this show called Dallas, have you got a table for us? It would work every time.

