Childhood is a few thousand evenings. You are scrolling through them.

I deal in finite things, so let me hand you a count you have almost certainly never run, because running it is uncomfortable and the mind avoids it. The number of evenings you will have with your child while they are still a child.

A childhood at home is roughly eighteen years. Call it sixty-five hundred evenings, give or take. But that is the gross figure, and the gross figure lies. The early ones, when they want nothing more than to be near you, are a few thousand at most before school and friends and the long slow turning-outward begins. After that you are sharing the evening with homework, then with their own screen, then with a closed bedroom door, then with a kid who lives somewhere else and calls on Sundays.

So the evenings when your child is small and wholly yours, the ones you are in right now, are a countable few thousand. And tonight is one of them. And you spent it looking down.

The thing about a countable quantity

When something feels infinite, you spend it carelessly. That is not a moral failing, it is just how the mind treats abundance. The problem is that childhood evenings only feel infinite. They are not. They are a fixed, draining number, and the cruelty is that the draining is invisible. No evening announces itself as one of the last good ones. They all feel ordinary, interchangeable, like there will always be more, right up until the day you realize the small person is gone and a larger one who does not need you the same way is living in their room.

I have stood at the end of a great many lives, and I will tell you what people do not regret. They do not regret the posts they missed. They do not regret the videos they did not watch, the feeds they did not refresh, the news they did not catch in real time. Not one person, at the end, has ever wished they had scrolled more. The regrets are all in the other direction, and they are all about attention that was available and given to something else.

What you are actually trading

Every evening you spend on the phone while your child plays beside you, you are making a trade, and I want you to see the terms clearly because you have been making it blind. You are trading an irreplaceable unit of a finite supply, one of the few thousand evenings of their childhood, for a fully replaceable thing, content that will be there tomorrow and next year and forever, content that is manufactured precisely so there is always more of it.

You are spending the scarce thing to consume the infinite thing. No banker, and I work alongside one, would call that a sound trade. You are giving away the only units that will ever run out in exchange for units that never will.

The good news, because there is some

You have evenings left. That is the whole point of my telling you the count now rather than letting you discover it in retrospect. The number is finite but it is not zero, and the only thing required to stop wasting them is to put the phone down while the small person is awake.

ScreenFine exists to make that mechanical instead of dependent on willpower, which fades exactly when you are most tired and most likely to reach for the scroll. Set a limit on the evening hours. Put a real cost on crossing it. The cost makes the reach conscious, and a conscious reach, in a room with a finite number of childhood evenings left in it, is one you will usually decline.

I am patient. I take everyone eventually, and I take every childhood eventually too, on its own schedule, as the child grows up exactly as they are supposed to. That is not the tragedy. The tragedy is the parent who reaches the end of the count and realizes they were present for so few of them, not because they did not love the child, but because the evenings felt infinite and the phone was right there.

They are not infinite. Tonight is one of them. The small person is in the next room. Put me down and go spend it.