The Guess You Live Inside

Pull the threads together — colour invented, the present forecast, the scene stitched from scraps — and a quiet, vertiginous conclusion arrives. You are not seeing reality. You are seeing your brain's best model of reality: a prediction it assembles from memory and expectation, and then checks, lazily, against the thin trickle of data coming up the nerves. When the guess and the data disagree, it is usually the guess you experience first, and the correction that arrives late.

Some scientists have a name for ordinary, healthy perception: a controlled hallucination. A dream that happens to be tethered, loosely, to the world. The difference between seeing and hallucinating is not that one is invented and the other real — both are invented. One is simply corrected more often.

You have never once met the world directly. You have only ever met your brain's rumour of it, and trusted the rumour completely, because it is the only thing you have ever been given.

And if the world you see is a model — what about the one who seems to be watching it?