Presumably on theories that have already been discussed to death. I was hoping mine was original. If you can point me to a thread on the board that deals with the idea I posted, I'll happily delete the post. I've already searched and read most of the G-Man theory threads and haven't found one that covers it yet. (Top of page 2, not the OP)
Yes
There's a Laidlaw Vault thing over at Steam Forums, in one of the emails, he says they don't take into account what happened on Blue Shift and Opposing Force when writing their stuff