As many of you know John Brockman is literary agent for a parliament of well-known scientists, science journalists, and others – Richard Dawkins, Steven Pinker, Dan Dennett, George Dyson and a cast of, if not thousands, perhaps hundreds. Each year he poses a question and they answer it. Then the answers are posted to the web at The Edge, Brockman’s website. This years’ question, which elicited 206 responses:
What scientific term or concept ought to be more widely known?
I’ve been through them, though only quickly, and selected three for comment: prediction error minimization, Bayes’s Theorem, and attractors.
Andy Clark: Philosopher and Cognitive Scientist; Professor of Logic and Metaphysics, University of Edinburgh, UK; Author: Surfing Uncertainty: Prediction, Action, and the Embodied Mind.
Let’s ease into this one.
Once upon a time, back in my undergraduate days during the 1960s, I was invited to a party at an artist’s loft. This was a real honest-to-god un-renovated loft, large, bare walls, a wood stove for heat (it was mid-winter), raw. Someone remarked they were showing a film “over there.” Sure enough, there was a 16mm projector facing a wall, clicking and buzzing rapidly away, and there were blurry gray smudges dancing on the wall opposite (no sound).
I watched the moving mottled grays for some seconds, five, ten, twenty, who knows, I wasn’t counting, and then SHAZAM! It became clear. On the right, a naked woman standing, bent forward, outstretched arms touching a wall. On the left, a naked man behind her, thrusting away. SEX! First porn film I’d ever seen.
But why did it take me awhile to see what was very plainly there in the flickering lights on the wall? Because I didn’t know what I was seeing, that’s why, and that’s what Clark’s prediction error minimization is getting at. If someone had said “hey, dirty movies” or I’d seen a title (say, “Danny Does Debbie”) I’d have known what to look for in the lights. But I didn’t know and it took me awhile to figure it out.