If you're an introvert you know what a pest invitations can be. You're not shy, you just don't want to be there... alone, in a crowd, feeling your authenticity being eroded by the battery-acid of inauthentic social expectation. Where was I going with this - that's right: excuses. Forget plausible excuses, they can be rebutted. No, a sophisticated introvert knows to employ the implausible...