A remarkable number of Nobel laureates seem to go quite potty in their dotage.
well that potty is nothing to do with their dotage or dementia in old age. Such potty behavior must have come out often even when they were young. That is not well documented because they were unknown characters and may have been busy in their work...
"German physics? one asks. I might rather have said Aryan physics or the physics of the Nordic species of man… But, I shall be answered, “Science is and remains international.” It is false. Science, like every other human product, is racial and conditioned by blood". .............Phillip Lenard, “ Nobel Prize for Physics in 1905"
In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) ..........Carl Sagan
There we see the difference between potty head and thoughtful person whether one is scientists or not and Noble L or not....