The best/smartest professionals I meet operate this way (because we know we're wrong quite a bit and don't know everything). It's definitely a personality trait. Inquisitive, curious, intelligent, but also there's some metacognition involved where we can be confident in what we do NOT know.

In contrast, I studied chemical engineering for a short stint. First year, first semester chemistry classes and labs were riddled with these types of students. Tell you you're wrong, IQ 197, scoff when you ask a question, etc...

Listen, if you're the smartest person alive that's fantastic, but please don't talk down to me or the mere mortals that I prefer to hang around with. We get along much better and have a lot more fun saying "I don't know, let's find out".