"Bunch of dicks" equals a failed site. It's really as simple as that.
Treat others with the same respect you’d want them to treat you. We’re all here to learn together. Be tolerant of others who may not know everything you know.
It's not optional or reserved for people you agree with; it is a basic tenet of the site. Any hostile behavior or ad hominem attacks should not be tolerated.
I would seriously consider applying that tenet EQUALLY to #2 and #3: The community should reject and down-vote disproportionate, mocking behavior towards any opposing ideas or people in the guise of making a VALID argument.
If you want this site to be successful, it has to be about objective, factual information. There's a "Back It Up! Principle" on these sites which has to apply ten-fold to a site like this … and it has to apply to BOTH sides of the issues.
If you want to make unsubstantiated claims, expect to be called on it. But just as equally, if you want to rant and rave and do a bunch of hand-waving as the skeptic, expect to be EQUALLY be called out about it as well. Otherwise, this site will fail.
Trust me on this one: Users will leave this site in droves if its primary purpose is for members to pat each other on the back and tell each other how smart they are. That type of clique-ish behavior starts when "the best quip" or "best put-down" curries favor and popularity from the community. Don't encourage those activities with your support. The best way to respond is with a polite "We don't do that here."
Let's keep the questions (and answers) canonical and authoritative. If you can resist the urge to browbeat those who hold opposing ideas (whether they're on this site or not), this site will thrive.