Are you one of the many Americans wondering "is Joe Biden mentally fit for the presidency?" Perhaps you have seen articles online stating, to some extent, that Joe Biden is senile and is absolutely not fit to be president. Those articles maybe point out a gaffe or two, note his most recent misstep or incompetent blunder, and quickly draw the conclusion that the answer to "is Joe Biden mentally fit for office?" is "No. Absolutely not. He is senile and deteriorating rapidly." I agree with those articles. Personally, I am certain that the answer to "is Joe Biden mentally fit?"...