Two things McCain's campaign wants you to know.
1) Don't expect McCain to know whether an event is in the past, present or future. And it's a good thing that he isn't clear on time and tenses.
2) However, anyone Obama has ever met in his life speaks for Obama. Ignore what Obama actually says and pay attention to random person X who has some reputed connection with Obama.
Will this work? With our media, it just may.