Ibentoken
Don't Tread on Me
He is retired, which makes the question idiotic.
He didn't forget everything when he retired, idiot.
I'm sure he is teaching and advising.
He is a neurosurgeon, they need to keep up to date on a daily basis. They can't stop for a few years, and then go back to work later just because they stumble across a patient they like.
As for the teaching, why would he when he makes enough money writing columns that piss idiots off?
In other words, still idiotic.
Better check his bio. He's much more than a neurosurgeon.