L∞ps

The Feedback L∞p as Superpower

The best AI users aren't the ones who write the best single prompt. They're the ones who iterate fastest. The gap between good and great is measured in cycles per hour.

There’s a persistent myth that working with AI is about crafting the perfect prompt. That somewhere out there is a magic sentence—precise enough, clever enough—that will make the machine produce exactly what you want on the first try.

This is the waterfall model of AI, and it’s dead.

The waterfall model comes from old software engineering: write a detailed spec, hand it off, wait for the finished product. It assumes you can know everything upfront. It assumes the gap between what you ask for and what you need is small enough to ignore. It almost never is.

What actually works is l∞ping. You throw something at the model—rough, half-formed, maybe even wrong on purpose—and you watch what comes back. Not to judge it. To learn from it. The response tells you something about the shape of the problem that you couldn’t see before you started. So you adjust. You tighten. You go again.

Prompt. Observe. Refine. Repeat.

This is the feedback l∞p, and it is the single most powerful pattern in AI work. Not because any individual cycle produces brilliance, but because the accumulation of cycles produces something no single shot ever could: convergence on what you actually mean.

Think about it from the other direction. When you write a prompt, you’re translating an intuition—something you can feel but can’t fully articulate—into language. That translation is lossy. Always. The words you choose carry connotations you didn’t intend, miss dimensions you didn’t know were important, and frame the problem in ways that constrain the solution space before the model even begins.

The first response is a mirror. It shows you what your words actually said, as opposed to what you thought they said. And that mirror is invaluable, because now you can see the gap. You can point at the delta between what you got and what you wanted and say: “Not that. More like this. Keep this part, lose that part.”

Each cycle through the l∞p does two things simultaneously. It moves the output closer to your intent. And it moves your intent closer to something expressible. You’re not just refining the machine’s work. You’re refining your own thinking.

This is why speed matters so much. The value of a feedback l∞p is a function of its frequency. A tight l∞p—seconds between cycles—keeps you in flow state. You can hold the full context in your head. You can feel the shape of the problem shifting in real time. A slow l∞p—minutes or hours between cycles—forces you to re-load context every time, and half your energy goes to remembering where you were instead of pushing forward.

The best practitioners I’ve watched work with AI look less like writers and more like jazz musicians. They’re not composing from a score. They’re playing call and response. They throw out a phrase, listen to what comes back, and riff on it. The conversation has a rhythm. There’s a groove.

And like jazz, the skill isn’t in any single note. It’s in the transitions. Knowing when to push harder on an idea versus when to pivot entirely. Knowing when the model is stuck in a local optimum and needs a completely different angle. Knowing when you’re three iterations deep into something that looked promising but is actually a dead end, and having the discipline to throw it all away and start the l∞p over from zero.

The old model of expertise was about knowing the answer. The new model is about knowing the next question. Every response from the AI is an invitation to ask a better question. The feedback l∞p turns AI from a vending machine—insert prompt, receive product—into a thinking partner. But only if you treat it that way. Only if you actually close the l∞p.

Most people don’t. Most people prompt once, get something back, and either accept it or give up. They’re standing in front of the most powerful iteration engine ever built, and they’re using it like a search engine. One query. One result. Done.

The unlock isn’t a better prompt. It’s a faster l∞p.