I've been trying to think of a new way of dealing with people. The "don't be a dick" model is a little vague while being fantastically simple, but says only about how we should act without saying how we should respond when conflict arises. How do we know when we should retaliate? Whether this retaliation is through words or action, at what point do we say, "No, no. I must stop you there."
I propose the Jeffersonian model of determining when retaliation is appropriate. When confronted, ask the yourself the following:
1) Does it break my bones?
2) Does it pick my pocket?
If it does either or both then retaliation is appropriate.