Just like you're good at knowing people, but can still sometimes be wrong cos everyone's fallible, I'm good at knowing how people perceive things, including me, though I can sometimes be wrong as to the best way to persuade them that they're wrong, if I believe they are. And some people, well, there doesn't seem to be a way to convince them they're wrong about you, once they take a disliking to you.
Also, it's kinda alien to me, the idea of someone being unwilling to climb the stairs, to extend the analogy to breaking point! I mean, I'll always climb any staircase, what's to lose? If it turns out to be BS at the top, what've I lost? Not a lot really, but I could still extract a lesson from the experience. My curiosity and openness gets the better of me pretty much every time, I know if I turn someone away I'll be wondering for ages and kicking myself, thinking, you know, suppose he was a schmuck but still had a point and my prejudice against him made me miss out on learning something? If I don't like what I see, I can always climb back down again and put it down to experience, but I might as well at least have a look. And I guess that's a symptom of just how open my views are to questioning or change - no matter what I think, I'm open to the idea that I'm wrong, and I find it hard to understand when people are not.