What would Sherlock think?
Alright, so this morning, also on the radio, I heard reports that after this past weekend's raid Osama might be in Pakistan, maybe even Islamabad itself. Now the BBC reports that Pakistan denies these reports saying that he couldn't possible be in Pakistan.

Here's my question. When giving an absolute negative, you have to have proof of an alternative or have ruled out every possible chance of the negative being positive. I seriously doubt that Pakistan has searched every square inch for Bin Laden, does that mean they know where he is?