Intelligence is pattern recognition, and the ability to understand and process complex ideas. Many other things inform decision making - emotion, tribal allegia

Intelligence is pattern recognition, and the ability to understand and process complex ideas. Many other things inform decision making - emotion, tribal allegiance, ego, paranoia, perspective, etc. And so, a more intelligent person can definitely come to a worse conclusion. And can even do so selectively: they may come to an excellent conclusion on one topic, and a foolish conclusion on another.