That's funny, being in a government organization you'd think he'd use the GPO Style Manual, and that doesn't mention whether to use "theory" with "Big Bang."
So, you weren't joking above - my bad.
O.K., since that's the reason he gave and the NASA web site from 1997 (before the younger Deutsch ever worked there) refers to the THEORY as such, I will give them the benefit of the doubt for now - there are 150 posts after the one you are responding to - perhaps you should read the rest of this thread before posting your ignorance for all to see?