We do not write fixed dialogue to be recited. We write changes. The player is free to reach the tipping point however they like, but once they have passed it, the debt, the trust or the shame have really moved.

Donald Winnicott (1896-1971), an English paediatrician and psychoanalyst, showed that play happens in a space between two worlds: what is in your head, and what exists around you. That is where you can ask "what if…?", try, get it wrong, start again. And it is in playing, he said in essence, that we are free to be creative. "La Lettre" is built on this idea.
The ten unavoidable moments and their tipping points form the frame; inside it, the player is free. Like a child who plays in confidence, they can try without fear of breaking everything: the story holds.
At moment M03, the discussion turns into a show: everyone starts playing a role. At moment M06, they no longer pay, they create. The story tells what Winnicott observed: by playing, you move from enduring to creating.
The AI freedom number, from 0 to 4, sets how much room is left for invention at each moment: enough for the player to dare, never so much that the story gets lost.
Each moment follows the same path: you start from a situation → the player does what they want → you reach the tipping point → something changes for good → you start again from a new situation. The characters can reach the tipping point in several ways. What matters is that once it is passed, something has really changed between them.
The ten cards are read the same way by the three trades that make the game: staging, writing and AI. Each card sets a tipping point and a change that the AI cannot alter. The "AI freedom" number says how much the AI is allowed to invent at that moment: 0, it invents nothing; 4, it has a lot of room.
The restaurant closes. Rosalia does the accounts. There is a bill left that two men cannot pay.
Since they cannot pay with money: with what? A drawing, a promise, some work?
The discussion turns into a show: everyone starts, without having decided to, playing a part.
"Why not there?" The restaurant wall becomes a character: it enters the deal.
The same gesture comes back, as a joke, as a dare, as a gift. The first brushstroke makes going back impossible.
They are no longer paying: they start creating. It is no longer a bill to settle, it is something else.
They laugh. Then they understand that perhaps they should not have laughed at that.
They all say "debt", but they are not talking about the same thing. Each gives something that really costs them.
Working together, not because everything is settled, but because they accept that it is not.
The ordinary morning closes the night. Then the gesture becomes an origin, a commodity, a legend.
At any moment, you can measure where the story stands. Eight dials describe what is happening between the three characters, like the gauges on a dashboard:
The engine will be able to serve other stories. With Winnicott in mind, we are thinking first of those that help people dare: introducing yourself, speaking up, holding a role in front of others.