Why, Again?

A toddler doesn't ask a million questions because they're annoying. They ask because they're the only honest scientist in the room.

Every parent knows the wall. You answer one why, and it doesn't land — it just opens the next why underneath it. Why is the sky blue. Why does light do that. Why do molecules do that. Why. Five deep is optimistic. Mine went further than that, regularly, and it was never the child who ran out first.

I used to think this was a phase to be endured. Something you smiled through until they grew out of it. It took me a long time to notice what was actually happening in those exchanges, and longer still to notice what stops happening to the rest of us once we do grow out of it.

A toddler asking why isn't collecting facts. Facts are what you get from a dictionary, and a toddler has no use for a dictionary. What they're actually doing is building a model — a working idea of how the world behaves, so they can predict it, and so they can act inside it. Why is the sky blue isn't really about the sky. It's a probe. Does my model hold? What happens when I push on it? The child asks again not because the first answer failed to inform them, but because it failed to satisfy the model — there's a gap between what they were told and what would have to be true for the world to make sense, and the only way to close that gap is to ask again from a slightly different angle.

This is, more or less, the scientific method, running at full speed with none of the vocabulary. Observe. Hypothesise. Push. Revise. My boys, at some point, worked this out for themselves without any help from me: the slide at the park became a laboratory. Everything went down it — whatever was in a pocket, whatever could be found nearby — and they tracked, without anyone asking them to, which materials went fastest and which stopped halfway. Then it rained, and the whole experiment reset. Which clothes let you go down fastest in the wet turned out to be a completely different question from which clothes were fastest in the dry, and they worked that out themselves, purely by repeating the run in different trousers until a pattern showed up.

Nobody taught them that changing one variable at a time is how you find out what's actually causing the result. They arrived knowing it already.

I wasn't much better, apparently, at their age. My mother tells a story about me dropping things off our balcony — eighteen floors up — just to see what happened to them on the way down. An egg splatters differently to a tomato. I don't remember doing it, only being told about it later, usually as evidence that I was a menace rather than evidence I was doing exactly what my own sons would end up doing on a slide, decades later, in a different country, having never heard the story.

Somewhere between that highchair and adulthood, most of us stop.

Not because we run out of curiosity. Because we get handed the model instead of building it, over and over, for about eighteen years, until reaching for a finished answer feels less like a shortcut and more like the only correct way to think. School doesn't ask why is the sky blue and let you sit with it. It tells you: Rayleigh scattering, next question. That's not a criticism of any one teacher — I've written before about why the system had to be built this way, at scale, on a clock, gradable by the thousand. But the effect compounds quietly. A child who once pushed on an answer eight times learns, slowly and without anyone deciding it should happen, that pushing is inefficient. The answer is the destination. Asking again is just friction on the way there.

By the time you're an adult with a real problem in front of you, the muscle that used to ask why five times in a row has mostly gone unused for two decades. It hasn't disappeared. It's just never been asked to do anything, so it doesn't reach for the job anymore.

I notice this most clearly in the gap between how do I do X and why is X true. They sound like cousins. They are not.

How do I do X wants an output. It terminates cleanly, usually in one exchange, because the goal was never to understand the mechanism — the goal was to get the artifact and move on. Why is X true doesn't terminate. It forks. It keeps producing its own next question, the way it did when you were three, because a real model always has another seam if you look closely enough. Most adult thinking, most of the time, lives entirely in the first mode. Not from stupidity. From the same rational pressure that shaped the school system in the first place: the artifact is what gets graded, what gets delivered, what gets paid for. The model underneath it is invisible to whoever's judging the output, so it quietly stops getting built.

The uncomfortable part isn't that we stopped asking why. It's that we usually can't tell we've stopped. Nobody feels the absence of a question they no longer think to ask.