I'm not going to go over this guy's many and varied strange opinions, just note that they were conspiracy theories and that he thought people he didn't agree intellectually with were dishonest (e.g. AI researchers from before the AI winter). And so on.

(And if you have a hard and certain opinion about something really complex you don't understand without good facts/logic for support, what are you doing..? Don't answer, that was a rhetorical question.)