Dominant design: the brick that won.

In every technology, one architecture quietly wins and everyone agrees to build on it. Miss that moment and you optimise the wrong thing for years. Here is the pattern, told through a toy brick and a Nobel-winning molecule that learned the same trick.

Pick up a LEGO brick made this year and snap it onto one made in 1958. It fits. Not approximately, exactly. Two generations of engineers, a near-bankruptcy, and a hundred thousand product variations later, the one thing nobody was allowed to touch was the coupling: the studs on top, the tubes underneath, the precise grip between them.

That refusal to change one small interface is not a manufacturing footnote. It is the most strategic decision the company ever made, and it has a name. The brick is a textbook case of a dominant design, and learning to see dominant designs, before they finish forming, is one of the highest-leverage skills in innovation. It is also, quietly, what separates a field that compounds from one that thrashes.

Fix one coupling. Let everything else explode.

A dominant design is a deal. The field agrees to freeze one interface, and in exchange it gets a combinatorial playground on top. Standardise the stud-and-tube and you get every set ever made. Standardise the node-and-linker and you get, as we are about to see, more than a hundred thousand new materials. Watch the move happen:

Left: a few standard parts. Right: a framework you can design on purpose. The coupling in the middle is the whole invention. Everything downstream is variations.

Ferment, then a winner, then a long polish.

The idea comes from Utterback and Abernathy, and from Anderson and Tushman. A new technology opens in an era of ferment: rival forms compete and nobody knows which will win. Then one architecture emerges as the dominant design, not because it is the most advanced, but because it balances practicality, cost, and acceptance well enough that the whole industry adopts it. After that comes an era of incremental change: a long stretch of making the winner better, cheaper, and faster.

You already live inside dozens of them. Every USB plug fits every USB port anywhere on earth because a dominant design settled the question. The QWERTY keyboard, the shipping container, the 1958 brick: each one is an interface that stopped changing so that everything around it could. As Baldwin and Clark showed, that is the power of modularity: freeze the connection, and you unlock the parts.

A dominant design is not the best idea. It is the one everyone agrees to build on.

How to know a dominant design has locked in.

A molecule just learned the brick’s trick.

For most of chemistry’s history, new materials were found, not designed. You mixed things, you got lucky, you wrote it down. An era of ferment with no dominant design, running for a century. Then a coupling appeared. Join a metal node to an organic linker with a strong bond, and you get a crystalline cage you can plan in advance. Swap the linker and the cage predictably grows or shrinks. It is the stud-and-tube of chemistry.

This is reticular chemistry, and in 2025 it won the Nobel Prize in Chemistry for Omar Yaghi, Susumu Kitagawa, and Richard Robson, for the metal-organic frameworks (MOFs) it builds. Yaghi defines the field as stitching molecular building blocks into extended structures by strong bonds. He has put it more plainly too. He wanted, he told New Scientist, to make materials one molecule at a time, like programming molecules like Lego. That is not a journalist’s metaphor. That is the inventor describing his own field.

And then the brick’s pattern played out exactly. Once the coupling held, in his lab’s landmark 2003 Nature paper on reticular synthesis, the variations exploded. Yaghi made sixteen versions of one framework by swapping linkers, like swapping bricks. Today more than a hundred thousand MOFs have been built, with one gram holding the surface area of a football field. They harvest water from desert air and pull carbon dioxide out of the sky. The field crossed from discovery to design, which is precisely what a dominant design lets a field do.

Copy this. Fill in your field. Paste it into MindrianOS.

I want to read the timing in my own field correctly, and I am not sure I have.

My domain: [DESCRIBE YOUR FIELD IN ONE OR TWO LINES - what you research or build, and the thing everyone seems to be converging on].

Here is what I notice. For a long time progress here came the slow way, by trial and discovery. Lately a single architecture, interface, or standard seems to be winning, and more and more of the work is just variations snapped onto it.

It reminds me of the toy brick that fixed one stud-and-tube coupling in 1958, so that every later brick still fits every earlier one - the interface won, and the sets exploded. It also reminds me of reticular chemistry, where a metal node joined to an organic linker became the coupling that turned material discovery into material design, and over a hundred thousand frameworks followed.

Help me think this through. First: in my field, has a dominant design actually emerged, or is this still an era of ferment with the winner unsettled? Do not jump to a product. Then place it on the S-curve, show me what is driving it, and tell me where the real opening is - the move three steps ahead, not a slightly better version of what already won.