It should be noted that the FAQ was largely written by a person (me) and should not necessarily be considered authoritative... if the LW community thinks something in the FAQ should change they should feel free to change it.
There was just an astonishingly civil examination of the most mindkilling topic I could think of in Discussion. I've criticized people for violating the LessWrong politics taboo in the past, but I'd be happy to chat about anything from particular elections to the merits of Marxism if it was always done so painstakingly in the articles and so thoughtfully in the rebuttals.
I'm not sure how to achieve that, though. "Everybody can talk about politics carelessly" isn't any better an idea than it was before, and trying to enforce "only talk abou...
From eyeballing the survey results, we might expect the worst ideological conflicts on LW to be those current among libertarians, liberals, and moderate-to-mainline socialists, and especially those that're interesting to nerds with those affiliations: not, for example, abortion or immigration, where one camp's almost exclusively conservative. And indeed, the most heated political arguments on LW that I remember have dealt with radical feminism, fat acceptance, the treatment of women in nerd culture, and anything vaguely associated with pick-up artistry. Nothing economic, which is a bit of a surprise, but maybe it's easier to cast those issues in consequential terms -- or maybe taxes just aren't sexy.
The ethno-nationalist wing of neoreaction has also caused problems, but I think that had less to do with the subject matter and more to do with the poster: long-time SSC readers may remember him as Jim.
"rationality" can be interpreted broadly enough that rational discussion of anything would count
"Rational discussion" is not rationality. You can very rationally discuss politics. You can very rationally discuss the life cycle of the cicada.
Truly "on topic" is content that helps the user to become more rational. Multiple definitions of rational apply: Being more practically effective counts. Being better able to sort through evidence counts. Meta-understanding on the meaning of rationality counts. Modelling what a rational...
Anything, as long as 1) it's chosen, written, and formulated in a way that shows alignment with the values of the community, taken in a broad way; 2) doesn't make LW look bad to outsiders. (There have been cases of mods stepping in, or the community shutting down certain insistent debaters, when it came to certain discussion topics, for reasons of it being very bad PR.)
The first condition in fact could be generalizable to pretty much any human group (deviations from this norm might be taken to be, basically, trolling), and is more restrictive than it may l...
"Here's an idea that can make you go crazy (and lose all your money) if you think about it too hard, let's write it up and give people nightmares for the next 4 years and counting".
I have this heuristic which states, if a bunch of smart people get excited about something, you should check it out. There's no obligation to also get excited about it (a lot of smart people get excited over classical literature, which does less than nothing for me, but I'm sure this is a product of my draw in the lottery of fascinations and not sloth.)
At this point, "anything that you find interesting and doesn't get downvoted into oblivion because nobody else finds it interesting" seems a reasonable criteria for "appropriate for LW". ...
Things I think should be treaded upon carefully if not avoided altogether:
I'm a new user on lesswrong. I entered into a discussion on the bias in the medical literature where I happen to have studied the literature in some detail, and knew some facts about the bias I could add, and could demonstrate. Now the subject there happened to be vaccines, which is apparently one where some of the patrons are caught up in the crowd think, so when I pointed out politely that reality was different than their crowd think, I promptly got a -4 karma score, preventing me from posting.
I point this out because it appears that the Less Wrong system itself contains systematic flaws that tend to reinforce crowd think dynamics, rather than piercing through them. I think crowd think is the largest cause of irrationality in the world by far.
Added later: Note I have linked and commented further here: http://whyarethingsthisway.com/2015/01/15/more-wrong-by-calculated-effort/
I just looked at those posts from that discussion, and your description of the literature is clearly cherry-picked. You're only concentrating on the studies which favor your argument and not contrasting them with the studies which oppose your argument. You only acknowledge that those other studies exist in passing. By going into great detail on your preferred studies instead of presenting a comprehensive overview you're exposing yourself to sampling bias.
For example, what would be inappropriately off topic to post to LessWrong discussion about?
I couldn't find an answer in the FAQ. (Perhaps it'd be worth adding one.) The closest I could find was this:
What is Less Wrong?
Less Wrong is an online community for discussion of rationality. Topics of interest include decision theory, philosophy, self-improvement, cognitive science, psychology, artificial intelligence, game theory, metamathematics, logic, evolutionary psychology, economics, and the far future.
However "rationality" can be interpreted broadly enough that rational discussion of anything would count, and my experience reading LW is compatible with this interpretation being applied by posters. Indeed my experience seems to suggest that practically everything is on topic; political discussion of certain sorts is frowned upon, but not due to being off topic. People often post about things far removed from the topics of interest. And some of these topics are very broad: it seems that a lot of material about self-improvement is acceptable, for instance.