What I've said is I think he is going into to dementia. Not because of his tweets because of two interviews he gave to reporters from economic magazines. He has a degree in economics from a very good school, U of P. This is not an easy program and economics relies on an understanding of calculus. In these interviews it was clear that he did not understand how GDP is calculated. Very few people understand what GDP is in the general population but it was at the heart of what he studied for four years. My degree is in chemistry and when I don't understand what a molecule is it means I am way down the dementia path.