Step 086 — Immunity and species boundaries

In multicellular consumers, the immune system operationalizes Distinction at molecular and cellular scales.

Book / layer. Book VI · E2
Macro step. CS-07 — Recover Life as a Structural Class
Short routes. https://prrp.site/s86 · https://prrp.site/s086

Status tags. bridge

Construction role

In multicellular consumers, the immune system operationalizes Distinction at molecular and cellular scales. At population scale, speciation forms boundary conditions between reproductive basins. Both extend the $E_2$ question: which differences preserve a living boundary, and which mark a different self-maintaining basin?

What this step earns

Immunity and species boundaries is made addressable as Step 086 in the fine-grained Construction Spine routing layer.

• Routing scaffold. Detailed earned-output extraction is pending the source-map pass.

What this step does not yet establish

This route exposes the RC3 construction step for inspection. It does not by itself establish peer review, empirical adequacy, or final manuscript-level source closure.

Source anchors

• Full Construction Spine RC3 whitepaper source (papers/whitepapers/panta-rhei-construction-spine-e0-e3/main.tex:1128)

Manuscript extraction state: Detailed source anchors pending extraction.

Anchor classification: whitepaper source resolved; manuscript extraction pending; Registry extraction pending; TauLib extraction pending.

Formalization and verification

Registry links: Registry extraction pending.

TauLib modules: TauLib module extraction pending.

Dependencies

• Previous: Step 085 — Evolution as PPAS selection
• Next: Step 087 — Neural bridge to self-modeling

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