[glimshe]

I've never seen him saying anything particularly smart or insightful. My impression is that he has moderately above average intelligence and entrepreneurship. If he wasn't at the right place at the right time, he would be yet another founder of a random startup.

[nosioptar]

I've never seen him say or do anything particularly human. If I believed in such things, I'd think he was some kind of souless drone sent here by aliens/demons/etc to destroy humanity.

[tmule]

Your impression about his intelligence is way off. Mark was part of the study for mathematically precocious youth, which has a math cutoff at the 1/10K rarity. He also has ambition at the same level. What’s probably missing, of late, is good taste and judgment.