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# GEMS Formula — Decks, Dice, Cards & Faces
The unifying equation: a **deck is a die**, a
**card is a face** — the same structure at
different visual registers. ## Canon | concept
| Thing | |---|---| | deck / die |
sapphire=deck | | card / face | sapphire=card
| | membership | diamond.deck (soft —
origin, not a cage) | | order |
topaz.card_number (faces also keep face_number
for roll order) | ## The shift: soft
membership A face used to be BOUND to one cube
(diamond.cube, a hard parent). Now a card
carries diamond.deck as soft *origin* —
every card from any deck can be drawn and
mixed with any other. The pull resolver draws
per-deck, by deck_type prefix, or across
`all`. Faces dive into deeper decks/dice —
recursion, not containment. ## What unified
(Day 375, FID cube-deck-unification) - The 6
card-ring cubes (spices, Continuum of Scales,
The River, Laugh Track Device Lineage) became
decks; their 56 faces became cards
(diamond.cube to diamond.deck). - `▲ card
cube` now forges decks/cards, never cubes —
the cube schema is closed. - `△ card` is a
thin alias of `△ deck`; ANY deck is rollable
(`△ d open <deck>` then `△ d roll`); `△
card pull` = random draw. - Reversal + spreads
live in the deck engine; pulls reachable over
MCP (the deck tool). ## The boundary (what is
NOT a leaf deck) World-ring cubes
(cosmostack/decks/dice) are navigation/scene
dice, NOT leaf decks — see the World Model
doc. Do not fold them into the draw pool.
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