I hope you don't actually mean that. It's a cynical, sad, and - quite frankly - false thing to believe.

Why? I don't have a problem recognizing that "being convincing" to the right people is a very good way of learning and verifying knowledge about objective reality. Just because it's by proxy, doesn't mean it doesn't work. This is how every one of us learns most things, and what's really sad to me is deluding yourself into thinking we're more special than that.

Honestly, it just sounds to me like you’ve come up with some axioms in your mind about the “fundamental nature” of humanity - and then granted yourself the luxury of certainty about them. That, with a dash of misanthropy, is something I’ve been seeing more and more on HN these days.