The Window You Can't Look Away From · free sample

Chapter 1 · The Brighter Egg

Somewhere in a meadow, seventy years ago, a ground-nesting bird is sitting on the wrong egg.

It is a plaster egg. A biologist made it, larger than any egg the bird could lay, painted with darker and bolder speckles than any real shell wears, and set it down at the edge of the nest. The bird's own eggs are there too, pale and real and a few inches away. And the bird climbs onto the counterfeit. It spreads itself wide over a thing far too big for its body, settles, and goes still, warm and certain and content, while its own clutch goes cold in the grass.

You want to call this a mistake. Hold that impulse, because it is the first thing this book is going to take away from you, and almost everything else depends on losing it.

The bird is not making a mistake. That is the part nearly everyone gets wrong, and getting it wrong is what turns this whole story into a story about willpower, which it is not. The bird is not being foolish, or greedy, or weak. It is doing precisely the thing evolution built it to do, correctly, at full competence. The competence is the trap.

Because an instinct is not a judgment. It is a measurement. The bird was never handed a portrait of its own true egg to match against. It was handed a rule: sit on the roundest, biggest, most speckled thing in the nest. For as long as there had been nests and eggs, the rule and the real egg pointed at the same object, because nothing in a meadow was ever bigger or rounder or more speckled than a real egg. The rule worked flawlessly for a hundred thousand years precisely because nobody was allowed to cheat the measurement. The biologist cheated it. He built a thing that scored higher on the rule than the real thing the rule was for, and the instinct, doing its job perfectly, went to the higher score.

His name was Niko Tinbergen, and once you see the shape he found, you find it everywhere he found it.

A herring gull chick pecks at a red spot on its parent's beak to be fed. Hand the chick a thin red rod striped with white, brighter and starker than any real beak, and it will peck harder at the rod than at an accurate model of its own parent's head. A male stickleback, built to attack red-bellied rivals in the spawning season, will strike more fiercely at a crude wooden lozenge whose underside has simply been painted a vivid red than at an exact replica of a rival male that happens to lack the color.

In every case the counterfeit is not a better copy of the whole animal. It does not need to be. It only has to be louder on the one dimension the instinct actually measures. Redder. Rounder. Faster. And it wins. The real thing loses to a caricature of itself.

Hold that sentence, because it is the hinge of the entire book: the real thing loses to a caricature of itself. Not to a better thing. To a dumber, flatter, more exaggerated thing that happens to score higher on the single number the machinery was reading.

Tinbergen gave the phenomenon a name that has never been improved on. He called it a supernormal stimulus: a signal that exceeds the natural one the animal evolved to respond to, and by exceeding it, out-competes it. The word is precise. Not abnormal. Super-normal. Not a broken version of the real signal but an intensified one, real signal turned up past the ceiling nature ever built. A caricature is not a lie. A caricature is a truth with the volume left on.

Now, you are not a stickleback, and this book is not going to pretend the distance from a fish to your daughter is a short walk. It is a long walk, and most of this book is the walking of it, one careful step at a time, seating every skeptic before answering them. But there is one thing that can be said standing right here, at the edge, that costs nothing and gives away the whole game.

We already do this to ourselves, on purpose, and we already know it works.

You have eaten a supernormal stimulus. A strawberry is a real signal. Its sweetness once meant ripe, safe, worth the calories, a measurement the tongue was built to make in a scarce and reliable world. A gas-station pastry is that signal caricatured: sweeter than any fruit that ever grew, engineered on exactly the dimension the tongue measures, by people who measured it too. Nobody sane thinks the person eating the second pastry has a weaker character than the person eating a strawberry. When it is sugar, we understand that the counterfeit is doing something to old machinery the old machinery has no defense against, because the machinery was calibrated for a world that no longer exists. When it is sugar, most of us have learned to stop hearing a weak character in the wanting.

Remember that we managed that much for sugar. We are going to need the same grace for the thing in her hand.

Because here is the turn the strawberry cannot take, and the reason this book exists.

Sugar hijacks a machine that is already built. The tongue you bring to the pastry is the finished tongue. The counterfeit can overeat it, but it cannot rewire it. The machinery this book is about is not finished. The system that measures what is worth wanting, worth getting out of bed for, worth crossing a room for, worth walking toward for years before it pays, is remodeled once, on a schedule, during the season we call adolescence. Rewired, pruned back, and reset, in the single great construction season it will ever have. And a system rebuilt like that takes much of its shape, in part, from whatever signal is loudest in the room while the work is being done.

That last step is the claim this whole book has to earn, and it will not be pretended settled here.

So the question is not only whether a supernormal stimulus can out-shout a real reward. Tinbergen answered that seventy years ago, in a meadow, with plaster. The new question is what happens when the animal doing the measuring is still building the ruler. When the caricature is not merely competing for a grown creature's attention, but teaching a half-built creature what a reward is supposed to feel like in the first place.

The only new question is what happens when the animal sitting on the brighter egg is a fifteen-year-old.

That is the question. It has to be earned.

The earning starts where it is safe to start, which is with the birds, because the birds cannot be accused of weakness.

Nobody argues with a herring gull. A gull has no willpower to fail, no character to be disappointed in, no phone and no parents and no bad year at school. When a gull chick pecks the painted rod harder than the real beak, no one in the seventy years since has looked at the film and thought what a lazy chick. Everyone can see, instantly, that the animal did nothing wrong. It ran the program a correctly-built chick is supposed to run. It measured how red, how contrasting, it went to the strongest signal, and that behavior kept its ancestors fed for as long as there had been gulls. The rig is what changed, not the chick.

Keep the gull. We are going to need it at the very end of this book, when the animal on the brighter egg turns out not to be a bird at all, and the reflex to call it lazy comes back dressed in human clothes.

For now, only the shape. A measurement, set by a world that could not cheat it. A counterfeit that cheats the one dimension the measurement reads. A real thing losing to a louder caricature of itself. It is the oldest trick in ethology and one of the best documented, and it was found by people who never heard of your children and had no stake in what your children do after school.

We have to go and find out what wanting actually is, and what it is made of, before we can say what it costs to counterfeit it. That is the next chapter. But keep the bird in your mind as we go. Spread wide over a thing it could not have made, warm and certain and doing everything right, while the real eggs go cold in the grass an inch away.