AWhat changed
Module boundaries could be selected around hidden design decisions rather than execution phases.
Scientific scope
The 1972 sole-authored paper's criterion; not invention of all modularity, encapsulation or object-oriented programming.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. This is the 1972 sole-authored paper’s modularization criterion, not a claim that Parnas alone invented every form of modular or object-oriented software design.
Contributors
- David L. Parnas · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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