Declaring "Crocker's Rules" was an explicit statement that you refused to be triggered and that every possible subject matter was on the table for reasoned discourse without devolving into an emotional response. The flip side of this is being open to accepting better ideas that you are not predisposed to accepting.
As an aside, Lee Daniel Crocker gets credit personally for successfully challenging some long-seated political beliefs I held, by virtue of compelling argumentation.
So, can you give some examples?
Furthermore, what's the point? I mean, if you're in a discussion group where there's a non-zero probability that one of it's members will pick slavery (or something else equally apalling) as a discussion issue, but group members are self-selected (which is a reasonable supposition for groups in general, and even more so for obscure mailing lists) then it's likely that all members are amoral enough for discussion purposes such that this "Crocker's rules" thing would be redundant.
What I meant is that I find it unlikely that in such a group there would even be a strong moral reaction to any issue in the first place. I don't know about the extropian mailing list, but take LessWrong members, for instance. They are quite shameless about the topics they choose. And they're not much given to non-cognitive criticism either (e.g. calling someone an ass). So calling on "Crocker's rules" would be just redundant.
What is the point of ignoring something that doesn't happen?
Edit: On the other hand, it relies on the assumption that there's a trade-off between civility and informativeness which just might not be there.
Second, your use of charged language (amoral, appalling, shameless) demonstrates why rational discussions can be difficult on sensitive topics.
Just talking about talking about them you are already sounding rather judgmental.
Calling Crocker's Rules exposes people to the expectations and reminds them what are striving to achieve, assuming that they are indeed trying follow the rules but got caught in the moment, which happens to most of us.
Was it a refusal to be triggered, or a decision to steel yourself for possibly being triggered and commitment summoning the wherewithal to handle that gracefully?
It follows from the idea that how something makes you feel has little relation to its veracity or rationality. If the goal of discussion is primarily about the veracity and rationality of an argument then taking offense contributes nothing toward that goal and tends to suppress otherwise reasonable perspectives via social convention.
Crocker's Rules can be looked at as an intentional refusal to have any sacred cows, consciously or subconsciously, and making an effort to respond to every discussion as if one actually does have no sacred cows.
Edit: to be perfectly clear, by "not responding emotionally" I mean not sending a nasty email while angry. I don't mean suppressing any emotional response.
I don't subscribe to that point of view because I disagree with the idea that safety and security should be prioritized above virtually everything else including freedom. But I think it's worth acknowledging in a devil's-advocate sense. The question, "What's the minimum level of standards enforcement / political correctness that's required to enable technological development / human progress?" is an interesting one. Clearly the answer isn't "Zero" in either case.
The analogy breaks down pretty quickly though.
I've also noticed that sometimes when I do that, the person I'm engaging with responds more respectfully.
Other times I hit back because sometimes people are jerks. I dunno. Jury's still out for me on whether I should ignore derision all the time.