I'm going to try to explain this very simply, because the amount of mail coming about this is staggering.
Basically, the claim is "Mark from Stone Church is also Bob and Thomas from London and I can't believe you guys can't figure this out. His accent was even obviously fake!"
Yes, the accent was horrible. Yes, it was probably Mark. So what do we do about that? We have NO caller ID. We can't prove that it's the same person. I can't know that he doesn't honestly believe what he's saying, even if he fakes an accent. I can't prove that ANYONE actually believes the shit they say on the phone.
But if the conversation is allowing us to make good points and the caller is cooperative, what reason do I have to ruin it by saying "I think you're a liar. I think you're that same 'Mark' guy..."? And what if I'm wrong?
It's simply a bad idea to go making accusations like that in the middle of the show, when I have no supporting evidence.
Curiously, people seem to hear "Mark's" voice everywhere. In addition to the three in the title there are one or two other callers who people feel are also the same guy. Sometimes I can hear the similarities, sometimes I can't.
Congratulations to those of you who can always hear it and always get it right (though I'm not sure how you know that you're right), but exactly what do you propose we do about it?