The Machinery of Familiar

If you could see the world with no prior expectations at all, you would not be able to function. You would also, briefly, see something extraordinary. Every surface would be impossibly detailed. Every face would be a small alien. The fact that there is air, the fact that there is gravity, the fact that there is anything at all rather than nothing, would not be neutral background facts. They would be loud.

The strangeness of the world is not gone. It has been filed.

We do not get to live there. The cost of processing the world that way is too high, and the brain solves the problem the way it solves most problems: by predicting. Once it has seen a thing a few times, it stops actually looking at the thing and starts looking at its prediction of the thing. The prediction is cheaper, faster, and almost always right. The price is that the thing itself disappears from your experience and is replaced by a label. The label is what "familiar" means.

What familiarity actually is

Familiarity is not knowledge. It is the absence of attention. Something becomes familiar when your prediction system is confident enough about it that it stops sending the raw signal upward. The signal is still arriving. You are just no longer being shown it. Your room, your face in the mirror, your partner's voice, the feel of your own hand, all of these were once vivid and are now invisible, not because they changed but because your model of them got good.

This is why a place you have lived in for ten years will seem suddenly foreign if you walk into it after a long trip. Nothing about the place changed. Your prediction got briefly out of date, and for a few seconds the raw signal made it through.

Why we need novelty

Novelty is not a luxury. It is the only reliable way to defeat the prediction system. The mind cannot pre file something it has not seen before. So for a brief window, before the labeling machinery catches up, the thing is allowed to actually arrive. This is what people mean when they say a trip "made them feel alive." It is not that the trip was full of meaning. It is that the prediction system was offline for a few hours and reality got through the door.

The catch is that novelty has a half life. The new place becomes the next labeled place. The first day in a city is alien. The fourth day is just where you live now. The machinery is too good. It will eat anything you give it.

How to defeat the machinery without leaving

You cannot turn the prediction system off. You can interrupt it.

Change the resolution. Look at something familiar at a scale your prediction does not cover. The grain of the wood on your desk. The shape of the white space around the letters in a book. The model is built at one scale, and switching scales sneaks the raw signal back in.

Refuse the label. Pick a thing you "know what it is" and try to look at it without naming it. Not for a minute, for a few seconds, before the label gets there. That window is what the world is actually like.

Move your body strangely. The prediction system is calibrated to your usual posture. Lie on the floor and look up. Walk through your house backwards. Suddenly your kitchen is unfamiliar, not because it changed but because the prediction was indexed to a viewpoint you no longer have.

The point

The world has not become less amazing. You have become better at not noticing it. Reality science is, in part, the practice of staying near the edge where the labeling has not finished yet. Most of what is interesting about being alive is in that thin band, before familiarity closes over the top.