(M,R)-system

Compiled with AI assistance and selectively reviewed. Please consult the cited passages; the books remain the authoritative source. About this companion

Editorial synthesis · provisional

Definition

An (M,R)-system is Rosen’s abstract account of living organization through linked metabolism and repair, presented in RB2. Metabolism supports operation and component production, while repair maintains and regenerates the machinery metabolism requires. The proposal retains their reciprocal functional organization without confusing closure to efficient causation with material isolation, guaranteed foresight or a settled proof that no machine can simulate any biological function.

Explanation

RB2 develops metabolism and repair as non-fractionable aspects of one organization: each supplies conditions needed by the other. This is a functional abstraction rather than a claim that every organism contains two physically separate departments. The metabolic network and maintenance machinery continually support and rebuild one another.

Closure to efficient causation concerns maintaining the processes that make continued organization possible. It is not a statement that matter and energy cease to pass through an organism. The text’s recursion of causes is organizational; the entry does not import a new diagram, equation or exhaustive molecular account absent from this treatment.

The explicit qualification says metabolic closure does not alone supply an internal future-guiding model. RB2 also marks Rosen’s strongest claims about computability as controversial and rejects needing the slogan that life can never be simulated in any sense. Those distinctions remain part of the proposal rather than being lost in a machine–organism opposition.

Scope and attribution

Preserve the Rosenian abstraction and all explicit qualifying distinctions.

RB2 — The Real Book, Volume II: Becoming Is Being

Reciprocal metabolism and repair support organizational closure, with anticipation and computability qualifications.

Occurrence locators: 130, 131, 132.

Background used in the editorial explanation

Metabolism-repair organization is distinguished from thermodynamic cost alone.