Sure. But I didn't say "It appears that you think autistic people are not cognitively superior overall to the average person", and that's because that isn't what I meant.
A common definition of "rationality" around here is "the art of winning", by that definition I don't see the distinction your making.
Well, first of all, Dahlen was countering not the claim "autistic people are not less rational than others" but the claim "autistic people are not extra-rational", which I never said and never meant.
Secondly, while indeed "rationality" is sometimes defined that way, if you take that definition at face value then you conclude that (e.g.) blind people, poor people, short people, and ugly people are ipso facto "less rational" than others. Maybe we need a word to denote "tendency to win" that covers all those t...
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:
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.