He’s not a genuis, he’s smart but very arrogant, he’s intolerable when you get him next to an actual subject matter expert

But he is right about Pluto. We either would need to add a half dozen+ more planets, or demote one into a new category. And Pluto would currently be in the bottom of that category - it’s barely large enough to fit in the new category, so it’s not a matter of where to draw the line

And in his words, if Pluto was between us and the sun it would grow a tail, and that’s no type of behavior for a planet to have