Sheldon wrote.......

"To imply that he couldn't work with "certain" people without having any evidence"

It is VERY clear when Jim says..."To save friendships" in the post linked below, that he can't work with certain people. I don't need more evidence than that.

http://www.thechipboard.com/index.cgi/page/1/md/read/id/1116322/sbj/not-working-out/

Andy - Las Vegas