For five centuries, if you wanted to read the Bible, you learned Latin. The book that governed your life was written in a language you didn't speak. A priesthood stood between you and the text, and the priesthood liked it that way.
Code has been our Latin.
For seventy years, the machines that govern our lives ran on languages almost nobody speaks. If you wanted something from a computer, you hired a translator. We called them programmers.
That arrangement just ended.
The strange part is that we don't have a good word for what replaced it. The official term is "natural language," which is a linguist's phrase — accurate and bloodless, like calling a kiss "interpersonal oral contact." "Vernacular" is closer. It's what the common tongue was called when Latin was the official one. But it smells of seminar rooms.
The word is prose.
Prose is what you're reading now. Prose is what you write when you write anything at all. And prose is now executable.
Literally. Strip an AI system bare and there is no hidden machinery, no secret handshake. Everything the model receives — its instructions, its tools, its memory of you, this entire conversation — is concatenated into one long string of words and fed in. Words come out. That's the whole transaction. The model doesn't even remember the last exchange; it rereads the transcript every time, like an actor handed the full script before each line. Tokens in, tokens out. Prose isn't the “interface” to the machine. It’s the whole payload.
Once you see this, the anatomy of these systems stops being mysterious. Open an agent's working folder and you find docs, skills, scripts, memory, assets, tools. It looks like a filing system. It's a spectrum — of how much judgment you're delegating.
A doc answers: what is true? It informs and does nothing.
A skill answers: how should this be done? A playbook the machine follows with judgment — precise enough to guide, loose enough to leave room.
A script answers: what should never vary? Deterministic code, zero interpretation, for the steps where judgment is a liability.
Memory answers: what do we already know? Tools answer: what can I touch?
A doc is prose that informs. A skill is prose that executes. A script is where prose ends and code takes over — because when a step must happen the same way every time, you don't want a mind involved. You want a machine.
Which means the craft has changed hands. Writing a good skill is not programming. It's writing — with the same virtues a good essay has. Clarity. Economy. Knowing what to leave out. Every vague sentence in your instructions becomes a vague behavior in the world. Every wasted word costs attention the machine could have spent understanding you. The style guides were right all along; they just didn't know they were writing engineering documentation.
The Reformation didn't happen because the Bible got better. It happened because the Bible became readable — and then everyone became responsible for what it said.
The machines finally speaks ‘vernacular’.
Ours.