🧱 Why Too Perfect Stacks Fail

I have played Tetris for more than thirty years. I grew up in Seoul until I was eleven, and I know the hum of an arcade. Then I came to Scotland for secondary school, where a grey Game Boy lived in my bag for years. Then Cambridge, then Yale, still with that one browser tab open while a meeting runs long. That is a long time to watch falling blocks, and it has given me an insight that sounds strange at first: the neatest stacks are the ones that get you killed.

Let me be clear about what I am writing about, because there is a lot of noise around Tetris. Building a clean, flat tower—smoothing the top so it sits even, edge to edge, all the way across—is a beginner and intermediate game. The real art is elsewhere. The expert opens the board up. She plays T spins, stacking on purpose, deliberately chaotic, in order to score bigger. It is truly an art form, and most people have not even heard of a T spin.

That is not what I am writing about. What I am writing about is simpler, and I think truer. It is about the top of the tower you are building—your nine-wide column of blocks—and why its surface has to carry a little imperfection, rather than being flat all the way across, if it is going to keep working.

The top surface has to give

Here is the thing about building a tower. You are not building it for its own sake. You are building it so you have a surface to land the next piece on. And the next piece is not under your control. The random engine throws whatever it throws, and half the time it throws you an S or a Z.

So if your top surface is perfectly flat, edge to edge, you have exactly one problem: there is nowhere for that S or that Z to sit. A flat top is the one landscape where those pieces have to create two holes instead of closing one. They land, and they rip the surface open. You clear a line, and the gap that appears is in the worst possible place, because you had no spare slot to absorb it.

But if the top carries a small, known imperfection—a little step, a single square that is not flush—the awkward piece lands, nests, and the surface stays roughly the shape you built it in. The imperfection is not the flaw. It is the thing that lets the tower keep working.

The flat surface is the trap

And here is the quiet part that gets people. When a surface is perfectly flat, pieces do not settle. They slide. A block rolling across a level top lands somewhere you did not choose, and now you have a gap under it, and a gap is exactly what you were trying to avoid.

The flat surface, which looked like safety, becomes the mechanism of your defeat. You build a landscape so smooth that the game itself starts making your mistakes.

I have watched players lose on a completely clean board. Not because the board was hard. Because the board was too easy to look at. They trusted the flatness. The flatness lied.

The leader who is too perfect

Now step back from the screen, and you will find the same shape in a boardroom, a pulpit, a classroom, a home.

People who present themselves as flawless are doing to the people around them exactly what a flat top does to an S piece. They leave the awkward one nowhere to land.

The leader who never admits a mistake, the teacher who never says “I don’t know,” the colleague whose record is immaculate and whose door is closed—people stop bringing them the S and Z pieces. Not because they are unkind. Because it is safer to drop the awkward problem somewhere else, where someone might actually absorb it.

Perfection is a surface that slides. People roll their real problems off of it and onto someone else, and the leader ends up alone on a clean board, losing a game that was already over.

The effective leader is the one with a visible gap in the surface. The one who says, plainly, “I got that wrong.” The one whose humility is not a performance but a structural feature of how the room works. That gap is where trust latches on. That gap is where the hard conversations land, get absorbed, and leave the surface in roughly the same shape as before—because the room was built to take them.

The Lord said it plainly, without the metaphor: “My grace is sufficient for you, for my strength is made perfect in weakness” (2 Corinthians 12:9). Notice the direction of that sentence. The strength does not come despite the gap in the surface. It comes because the gap is there, and grace has somewhere to sit.

And when a leader is honest about what he does not know, something else happens. The people around him stop performing. They stop dropping polished problems onto a surface that will slide them off, and start bringing the real ones. The room gets harder. The room also gets better. That is the point.

The gap is not the flaw

So no—do not build the immaculate tower. Do not build the immaculate résumé, the immaculate ministry, the immaculate self-presentation. It looks like strength from the outside and functions as a trap from the inside.

Build with one honest imperfection in it. A known weakness, spoken out loud. A failure you will name in a meeting. A question you will answer with “I don’t know, but I will find out.” That gap is not the flaw in the tower. It is the place where the game keeps working—where the S and Z pieces, the awkward ones, the real ones, can actually land and be absorbed without tearing the whole thing open.

Thirty years of falling blocks taught me this: the tower that survives is never the prettiest one. It is the one with a place for the mess to sit.