# Ideator Wave 25 — Sept 19, 2026 (Cell Boundaries)

**5 boundary ideas**: edge, threshold, membrane, wall, portal.

## 1. quilt-cell-edge — Liminal
- Schema: `edge`, `inside`, `outside`
- Cells mark boundaries
- **Edges are liminal cells.**

## 2. quilt-cell-threshold — Crossing
- Schema: `threshold`, `crossers`, `gatekeeper`
- Cells at boundaries witness entrants
- **Thresholds are decision cells.**

## 3. quilt-cell-membrane — Selectivity
- Schema: `permeability`, `selectivity`, `pores`
- Cells form semi-permeable surfaces
- **Membranes are selective witnesses.**

## 4. quilt-cell-wall — Barrier
- Schema: `wall`, `gates`, `defenders`
- Cells form walls
- **Breaches are witnessed.**

## 5. quilt-cell-portal — Wormhole
- Schema: `portal`, `key`, `passage`
- Cells link distant regions
- **Portals are dual-witnessed cells.**

## Cross-cutting

All 5 ideas introduce **boundary** to cells. The substrate now has:
- Liminal space (edge)
- Decision points (threshold)
- Selectivity (membrane)
- Barriers (wall)
- Wormholes (portal)

The canon has **topology**.