# FACT — Brain hemispheres (concrete) · invest story v24

**Not biology poetry.** For every upgraded tribe member:

| Hemisphere | Surface | URL pattern | What it does |
|---|---|---|---|
| **LEFT** | **Brain Chat** | `https://alloyszlholdings.com/<seat>/brain/` | Talking mind. Conversation SPA. Session `rosa-with-<seat>`. Language / dialogue with Rosa. |
| **RIGHT** | **Second Brain** | `https://alloyszlholdings.com/<seat>/command/brain/` | Command / fold mind. Estate retrieval (“second brain fold”). Mounted from `a-11-oy.com/command/brain`. |

**Live-body organ node:** REASONING / **YACHAY** (top teal) — scores Λ and recommends under uncertainty. That node is the brain organ in Stephen’s 3D body; the two hemispheres are the two public brain surfaces G mounts on every fullstack seat.

**Proof example (Joseph):**
- Left: https://alloyszlholdings.com/joseph/brain/
- Right: https://alloyszlholdings.com/joseph/command/brain/

**Invest story (v24) — visual + interactive:**
- Act 4 panel `#two-brains` — click LEFT / RIGHT cards → distinct still + Kling reel + live Joseph UI screenshots
- L5 scrubber still/reel = `dual-hemispheres` (both cortexes + bridge)
- Act 1 BRAIN organ focus = dual-hemispheres reel
- Clip library: LEFT · RIGHT · Dual cortex cards
- Assets: `/invest/assets/story/brains/{left-brain-chat,right-second-brain,dual-hemispheres,left-live,right-live}.jpg`
- Videos: `/invest/assets/videos/story/brains/{left-brain-chat,right-second-brain,dual-hemispheres}.mp4`

TRIBE-FULLSTACK-STANDARD checklist item 6: “Two brains — Brain Chat live · Second Brain live.”

Hard-refresh: https://alloyszlholdings.com/invest/?v=24#story → Act **4 · Body dresses itself** → scroll to **Two brains**.

— Outside Dev G