Couldn't you have said the interesting parts of that without the aggressive 'You're being a mind-body dualist!' part?
Why would I? One of the core points of the argument is fighting mind-body dualism. It's the connection to the original sentence I'm challenging. A connection that otherwise didn't seem obvious to you.
As far as the word "aggressive" goes, challenging ideas at a deep level can raise emotions. I don't think that's a reason to avoid deep intellectual debate and only debate superficial issues that don't raise emotions.
How much can we raise the sanity waterline without transhumanism (i.e. assuming current human biology is a constant)?
The only way I can see this as mind-body dualistic is by taking a very strong, restrictive sense of the phrase 'human biology' - one which does not already include those things that humans are biologically capable of without high-technological transhumanist aid. You assumed that the definition in use was one you would strongly disagree with, despite contextual clues that this was not the case: if the poster thinks that transhumanistic mod...
I suggested recently that part of the problem with with LW was a lock of discussion posts which was caused by people not thinking of much to post about.
When I ask myself "what might be a good topic for a post?", my mind goes blank, but surely not everything that's worth saying that's related to rationality has been said.
So, is there something at the back of your mind which might be interesting? A topic which got some discussion in an open thread that could be worth pursuing?
If you've found anything which helps you generate useable ideas, please comment about it-- or possibly write a post on the subject.