Doing a bit of more my own background reading on this topic of 'cartwheels'; a topic that indeed that indeed has been long and laboriously discussed here, but again consuming cyberspace, I came across this interesting exchange from last month on another site that involved personalities well known here.
Couple things I came away with about structuring effective arguments, and the current back and forth about cartwheels:
1) RoseMontague is indeed a very much admired arguer for reasons again evident here.
a) when s/he says something is factual, you can pretty much always 'take it to the bank'. You may disagree with the conclusions s/he draws, or the opinions s/he clearly delineates as such, but woe be to the unwary who doubts a fact she states in an argument.
b) s/he does not find it necessary to 'argue' each and every point to the absurdity of having to resort to diversions, pedantry, sophism, and spelling lessons.
Reference the way s/he handles the alleged inappropriateness of Knox's activities during the Memorial for the murdered Meredith, and resolves quickly with a quote from the Judge the quibbling about what Raffaele said.
2) Other much less effective arguers, who find it impossible to ever concede anything or ever admit any error are reduced to the revealing minute of arguing the distinctions between 'good' versus 'close' friendships.
Personally, I learned from the exchange that resulted from 'Cartwheels' and believe others may benefit as well
http://maundygregory.wordpress.com/2011/05/07/amanda-knox-who-breaks-a-butterfly-on-a-cartwheel/
PS:
Please spare us the usual Home Team whines about the site itself.
The exchange is what I emphasize, and could have very well been here.
It has absolutely zero dependence on the site or its moderator.