On: This talk puts the eccentric absent-minded professor stereotype to rest once and for all.

[cdr]

He puts on a nice act. No doubt he's had plenty of practice. And of course the TED audience eats it right up.

[kf → cdr]

He'd be a hell of an 8th grade science teacher...

[a-priori → kf]

No doubt. I wish I had him as a science teacher.

My grade 8 science teacher didn't know the difference between microwaves and radioactivity (true story).