Is our VP a sick man?

I've said it before and I'll say it again. I think that Dick Cheney suffers from dementia. My theory seems supported by this statement from a friend of his:

"The real anomaly in the Administration is Cheney. I consider Cheney a good friend. I've known him for thirty years. But Dick Cheney I don't know anymore."

- Brent Scowcroft -

Full details here

Maybe the reason we never see Dick Cheney in public is because he is being kept somewhere safe so that he doesn't wander down Pennsylvania avenue muttering to himself about a mining shaft gap?

If my suspicion is true it would mean that the man everyone in the Bush administration relies upon for gravitas is without his wits. That would sure explain a lot.