I have been here long enough to be in the company of giants - those who knew their subject and were willing to share their knowledge. I recall particularly lethe, BenTheMan and AlphaNumeric, but there were many others. In those days it was a fun and educative subforum - I for one learned a lot from these guy's knowledge and kindness. And now what? A subforum dominated by the likes of arfa brane and Write4U, neither of whom understand anything in either physics or mathematics. Moreover, neither of these guys will countenance any correction or criticism - often their response to this is personal abuse. Shame, but I guess that is "evolution" of a forum?