Bob Schieffer Is a Doddering Old Man
I can't prove that, of course -- any more than Schieffer can prove The Donald™ is a racist.
Then again, I do watch Face the Nation and have seen Schieffer ramble on about diabolical robots and become totally flummoxed by the idea of reducing tax rates while closing loopholes to maintain revenues. So at least I have some evidence for my assertion.
What does Bob have for his?