Drubin, true. I've also lost people I considered interesting and sometimes as friends this way, but the gentleman in question had a manner, apart from peddling often halftruths and mere assumtions as were they cast in stone, which often was plainly an insult to the intelligence and savvyness of his peers here. The assumtions were hardly challenging, we've been through all that many times before, that, together with his bearing, and a kind of assuredness, where true knowledge in this field would have at least allowed a bit of doubt, were indeeed hard to bear. Some tried to get into serious conversation with him, even I liked some of what he had to say and posted accordingly, but basically he just repeated his mantra, enriched with quite a bit of sarcasm, which must been insulting to quite a few here. Frankly, it was the first time here on A. that I also thought "good riddance", because his criticisms were not particularly constructive, I found.