> Why do we think we understand the world more than we actually do?

To repurpose a quote originally about believing in good-versus-evil:

> Lord Vetinari gave [Vimes] a friendly smile.

> “Of course, of course,” he said. “You have to believe that, I appreciate. Otherwise you’d go quite mad. Otherwise you’d think you’re standing on a feather-thin bridge over the vaults of Hell. Otherwise existence would be a dark agony and the only hope would be that there is no life after death. I quite understand.” He looked at his desk, and sighed.

-- Guards! Guards! by Terry Pratchett