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		 No, I don't know anything about any other versions. I suppose there might be some introductory material or something but there'd be no reason to update the essay itself. 
 
I can't stress enough that the contents were originally delivered as a lecture series and the text has only been modified lightly for the page. If you're willing to look a bit foolish, I recommend reading aloud various passages to really drive home the style. 
 
I hope you enjoy it, I find it ver though provoking and return to it occasionally, particularly the first chapter, for its exploration of how thinking itself changes. 
		
	
		
		
		
		
		
	
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