The ladder — a purchase prototype

Everything on one page, in order, with the ticket pinned beside it.

Nothing on this page can be bought. This is a prototype of a purchase flow, not a purchase flow. No brief reaches us, no payment link is behind anything here, and which of the five (if any) becomes the real one is not decided. specified, not built 11 Sep 2026

The work it configures is done by people, and the team specified for it has never run. Which parts of it could later be done without them is a decision nobody has taken. specified, never run 11 Sep 2026

What it is testing	Whether seeing the whole thing at once beats being walked through it. Closest to an ordinary cart, and the cheapest to be wrong about.
What is wrong with it	It looks like a form, and a long page of choices is a page people skim to the bottom of and price without reading.
What it produces	One JSON brief, identical across all five prototypes. The interface is the variable; the document is not.

This prototype needs JavaScript. Everything it does happens in this browser: there is no form on this site and no page here opens a network connection, so with scripting off there is nothing to fall back to except the description of what it would do.

The interview →The estate board →The delta →The scenario →All five, compared →

The six offers → Every claim on this site, with its state → What we do not say →