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Low-cost prototype generation

Definition

Mechanism

Performs the Act of constructing a low-cost Artifact (prototype) to verify critical assumptions in the Spec before full commitment. Recursion into further prototyping is stopped by MarginalValueRule.

Preconditions

  1. PlanBundle with high uncertainty/risk

Postconditions

  1. ProtoPack artifact (Evidence of feasibility)

Invariants

  1. Costs at most `cost_fraction` of the full commitment it de-risks.
  2. The Prototype addresses risks named in the Plan.

Risks

Failure modes

  1. Over-engineering

    Building the full product instead of a prototype.

  2. False Negative

    Prototype fails due to low fidelity, killing a good plan.

  3. Scope Creep

    Prototype expands beyond verification needs.

Relationships

Builds on

Accepts

Infrastructure

Spec

Rigorous requirement definition

References

Infrastructure

Act

Root primitive for state modification

MarginalValueRule

Deepen only while expected improvement plus an exploration credit, divided by incremental cost, exceeds a domain threshold

Infrastructure

Plan

An ordered sequence of steps to achieve a goal

Yields

Infrastructure

Artifact

Immutable data unit

Nothing in this library builds on this pattern yet.

Reference

Parameters

cost_fraction Ratio, (0.0, 0.5]
Share of the full commitment's cost this prototype may consume.

Signature

  • Act(Artifact)

Identity

Ref
Build#e2c4
Sema ID
sema:Build#mh:SHA-256:e2c44670a03fffee712f69a847aae0b6959ba58f9c7a14513cd8759d3921d5e3
Ring
1
Tier
1
Updated
2026-11-11
Supersedes
  • sema:Build#mh:SHA-256:00f3e2cc017af17d5de5a121ddd38017635736aa54c5ef23ee43c84abe5ddab6
  • sema:Build#mh:SHA-256:24b99d995cd2d544f447f9f71a3e33cc19667b89ba33591e32c70d2ab2e0f9b0
  • sema:Build#mh:SHA-256:779891ac7847940250f7a8a7cb1610f190862df7af2e5b2fd680b0d89dc42bf2
  • sema:Build#mh:SHA-256:8c12768e582bf408aedc62adf2f68ebc0caba12e53191af37a35fc61befc1704
  • sema:Build#mh:SHA-256:ddb234abcbbeab92a4b09829d2dbf22adc706c6183d529144c078170c73c65a4