The Architect's Single Sheet of Onionskin
Eero Saarinen, the architect behind modernist icons like the Gateway Arch in St. Louis and the TWA Terminal in New York, had a peculiar practice that ran counter to the image of the lone genius sketching on a vast drafting table. Before a single line was drawn for a new building, before the models were built, he would insist on a crucial, almost ritualistic step. He would take a single sheet of thin, translucent onionskin paper, place it on his desk, and write down the entire idea of the building.
This wasn't a to-do list or a project plan in the modern sense. It was a declaration of purpose. On that one fragile sheet, he would try to capture the essence of the problem he was solving. What feeling should the structure evoke? What was its core function? What story was it meant to tell? He would push past the aesthetics and the engineering challenges to articulate the singular, guiding principle. He called this document the “one-page statement,” and it was the unwavering standard against which every subsequent design decision would be measured.
We drown in tools that encourage proliferation. Our digital workspaces have infinite scrolling canvases, endless nested folders, and apps that promise to capture every fleeting thought. Saarinen’s method is a stark, beautiful antidote to this. The physical limitation of the single sheet was the entire point. It forced a ruthless economy of thought. There was no room for rambling or for nice-but-extraneous ideas. If a concept couldn't be stated clearly and concisely enough to fit on that page, it wasn't a core concept. It was noise.
The Fulcrum of a Thousand Decisions
This practice transcends simple planning. It’s about creating a fixed point of reference, a north star for a project that will inevitably become complex and muddied by practical constraints. When his team of designers and engineers would debate a detail—the curve of a roof, the choice of a material—they could return to the onionskin. The question was never “Do we like this?” but “Does this serve the idea?” The single sheet became the project’s keystone, the single point of leverage that brought coherence to thousands of disparate actions.
I think about that onionskin sheet often when I feel a project starting to drift. It’s a call to step back from the jumble of tasks, the feature creep, and the endless optimization. Can I still state the core purpose? Not in a ten-page brief, but in a few clear sentences? That simplicity is a form of rigor. It’s the hard work of figuring out what you’re actually trying to do before you spend energy on how you’re going to do it.
Saarinen’s legacy isn’t just in the soaring curves of his buildings, but in the clarity of the thinking that underpinned them. He understood that the most powerful tool for getting real work done isn't a more elaborate system, but a more profound focus. Sometimes, the most productive thing you can do is to take the thinnest, most delicate sheet of paper you can find, and have the discipline to define your one thing.
Notes & further reading
A few pages I came back to while writing this: