A reversible proof plan before a software rewrite

Choose uncertainty that can change the path

Select one question whose answer could move the buyer between repair, selective replacement, rebuild, retirement, or observation. Examples include extracting a data boundary, reproducing a critical workflow, replacing one dependency, deploying a clean slice, or keeping an interface stable while its implementation changes. Avoid proofs that merely demonstrate familiar technology.

Write the current evidence and counterevidence first. If every plausible result leads to the same decision, the proof has little decision value. State what result supports each path, which stakeholders interpret it, and what remains uncertain even after success. The proof should reduce one uncertainty rather than perform a miniature unlabeled rebuild.

Fix the boundary before execution

Name the input, safe environment, target behavior, dependencies, time and cost ceiling, acceptance checks, stop conditions, owner, evidence capture, and cleanup. Preserve production data and credentials behind approved controls. If the proof touches a live system, the buyer must approve the change and recovery plan through its normal release process.

Define reversal concretely: delete an isolated branch, remove a shadow service, restore a configuration, stop dual writes, or return traffic to the existing path. A rollback claim without tested commands, data consequences, and authority is not a reversal plan. Record irreversible actions and obtain buyer acceptance before crossing them.

Convert the result into a disposition

Capture the exact revision, environment, commands, observed outputs, failures, interventions, elapsed effort, new constraints, and acceptance result. Compare the evidence with the prewritten decision conditions. A failed proof may reveal a smaller repair, a different boundary, or missing information rather than proving that a full rebuild is necessary.

Reality Contact, LLC designs the proof plan for Forward Cost Dossier; implementation occurs only under buyer authority and a separate scope. The proof does not certify security, production readiness, cost, schedule, or business outcome. The buyer decides whether the evidence justifies repair, rebuild, selective replacement, retirement, or continued observation.

Where the service stops

Reality Contact, LLC prepares technical decision evidence but does not certify security, compliance, reliability, valuation, delivery dates, or cost estimates; it does not give legal, investment, accounting, or procurement advice and does not guarantee that any selected path will succeed. The buyer defines the target state and constraints, supplies authorized evidence, challenges assumptions, approves the proof, chooses the path, assigns funding and owners, and commissions any repair, rebuild, selective replacement, or retirement under a separate scope. This technical decision service does not replace security, compliance, legal, accounting, investment, procurement, product, data, architecture, or production-operations review. The buyer owns the target state, estimates, constraints, proof authority, funding, staffing, implementation scope, and final repair, rebuild, selective replacement, retirement, or observation decision.