I bet it is Chemo brain. That happens to some people. You'll have to be very vigilant with him. If he does not get mad when you correct him, I'd stick with him a bit. But research everything on your own if you aren't yet.
He may be still "good" on theory, but fuzzy on details.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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