Mock-up · Shared building blocks← All options

Building blocks any of the four layouts would share

Same engine, new front end: these patterns do the simplifying
1 · THREE LEVELS OF DETAIL
Explore · 5 leversDonor livers · who is offered first · DCD share · declines · people joining
Adjust · about 12 settingsSize matching · suspension · removal when improved · urgent groups · survival model · run length · seeds
Everything · the full simulator ↗The current site, unchanged, one click away with the same settings carried across
Each level opens from the one above. Nothing is removed from the full simulator; it becomes the expert layer.
2 · WHAT EVERY LEVER LOOKS LIKE
48%
20%▲ UK now70%

Donation after circulatory death. Offered by a different route; more often cannot be used.

Name in plain words, jargon underlined with a one-line meaning on hover The UK-now mark on every control, and a Reset to UK now One sentence on what it is; never the formula Sensible range: wide enough to matter, no absurd ends
3 · OUTCOMES AS 100 PEOPLE
63 transplanted · UK 64 24 still waiting · UK 23 5 removed · UK 5 8 died or became too unwell · UK 8
Counts, not percentages; one year after joining as the headline moment, two years one tap away Four colours that also differ in lightness, so they survive limited colour vision and greyscale printing Careful words: "died or became too unwell for a transplant", never "died waiting" The UK figure beside each count, always, so the model is checkable at a glance
4 · THE DIFFERENCE, SAID ONCE
+6 transplanted −5 still waiting 0 removed −1 died or too unwell

With 95 livers a month instead of 84, six more people in every 100 are transplanted within a year and one fewer dies or becomes too unwell. The same people and the same livers were used; only the supply changed. Nationally, roughly 55 more transplants a year.

Chips first (the four outcomes), then one sentence written from a template Per 100 people and nationally, so small differences are neither hidden nor inflated Two things at a time by default; a third on request
5 · HOW SURE, WITHOUT STATISTICS
Transplanted within a year, lowest to highest of 10 runs
UK now
61–66
95 livers
67–72
Bars that do not overlap: the difference is not chance.
10 runs by default, run quietly in the background while one plays Range bars, not intervals and p-values; Full statistics ▸ opens the existing tables "Why do runs differ?" explains chance in two sentences
6 · PLAIN WORDS FIRST, TERMS SECOND
Most benefit (UK rule)Transplant Benefit Score
How unwell someone isUKELD, the UK severity score
DCD donorsDonation after circulatory death
Not being offered for nowSuspended from the list
Survival modelHow people would fare without a transplant
One runA seed: one set of chance events
The term appears in the hover note and in Adjust, so clinicians still find what they know Ranking rule and survival model are never in the same control
Animation on demand. The outcome picture is the headline; the animated list you already have opens when someone wants to see the mechanism, and is the "In detail" layer.
UK now The UK as it is now is the anchor everywhere: the default state, a mark on every control, a figure beside every outcome, and the A in every comparison unless the person pins another.