I don't think it's about the computing, but about the entire shift in worldview required to accept that what you perceive to be true isn't necessarily so. This is much more of an emotional issue than a logical or analytical one. It also naturally trends towards Betrand Russell's, "The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt."

It's one thing to state you understand this and another altogether to live it. It's not pleasant. And I find many who even claim to have adopted this sort of worldview are instead just as cocksure of themselves, but instead of meeting other notions with rejection, they meet them with 'compassionate condescension.'