McGrath: Thank you for being here. Okay, let us focus on the substance of the arguments, rather than our identities or personal histories. I know you've been skirting around this issue for a while (I still remember the unhelpful book you recommended to me - well it was a little helpful in undermining your aim), but if you could finally explain to us all why we should trust your hypothetical sources rather than anybody else's, I might finally be convinced.