Working Paper No. 001 (Version 4.0) The Methodology of Forensic STEM™

Working Paper No. 001: The Methodology of Forensic STEM™ is the principal methodological working paper for the development of Forensic STEM™ at g² Insight Lab. Version 4.0 (September 2026) is the post-specification foundational revision of the Working Paper. It follows the completion and public archiving of FS-POST-1.0, the Forensic STEM™ Post-Comparative Methodological Specification, which was produced in response to White Paper No. 006, Locating Forensic STEM™: A Comparative Methodological Analysis. Version 4.0 updates the conceptual, institutional, evidential and research position of Forensic STEM™ around that operative specification. It does not replace FS-POST-1.0 as the procedural specification. White Paper No. 006 identified substantial methodological ancestry and operational overlap between components of Forensic STEM™ and established investigative, systems-oriented and evidential methodologies. It did not support treating the methodology as a collection of independently novel operations. The surviving research proposition therefore concerns the architecture through which established and adapted operations are integrated. Version 4.0 retains the provisional classification Candidate Distinct Methodological Synthesis and does not claim established novelty, validity, reliability, reproducibility, generalisability, superiority or comparative effectiveness. Since Version 3.0, the candidate architecture has been formally specified in FS-POST-1.0. The current investigative core comprises eight stages: Framing; Evidence-State Preservation and Registration; System Representation; Pattern Reconstruction; Competing Whole-System Reconstruction; Comparative Evaluation; Uncertainty and Confidence; and Evidence-Responsive Revision and Provenance. Recommendation development is now separated from the investigative core into the FS-APP-01 post-investigative application layer. Version 4.0 therefore marks a shift from methodological specification to methodological testing. The immediate next research priority is independent methodological challenge of FS-POST-1.0, followed by prospective real-world application, comparative application studies, reliability and inter-investigator research, failure-mode testing, cross-domain evaluation and progressive validation. Forensic STEM™ remains under active development. Its functional necessity, analytical consequence, reliability, validity, reproducibility, transferability, comparative utility and generalisability have not been established. These remain empirical questions for subsequent research. Version and title clarification: This record represents the continuing development of Working Paper No. 001. Earlier deposited files associated with this work contained inconsistent working-paper numbering and titles during the early development of the publication series. These should not be interpreted as separate Working Papers No. 002 or No. 003. Version 4.0 retains Working Paper No. 001 and records the earlier numbering inconsistency rather than altering historical deposits. Authoritative publication lineage:Version 1.0, July 2026: The Case for Forensic STEM™Version 2.0, July 2026: The Methodology of Forensic STEM™Version 3.0, August 2026: The Methodology of Forensic STEM™Version 4.0, September 2026: The Methodology of Forensic STEM™, Post-Specification Foundational Revision Version 2.0 constituted a major conceptual revision of the original paper. Version 3.0 constituted the major post-comparative revision following White Paper No. 006. Version 4.0 records the completion of FS-POST-1.0 and moves the programme from specification toward independent challenge and empirical testing. Historical versions remain part of the research record and should not be silently replaced. Author: Glynn Gregory, BSc (Hons), MIScT, RSciInstitution: g² Insight LabResearch Programme: Complex Human SystemsMethodology: Forensic STEM™Document: Working Paper No. 001Version: 4.0Operative Specification: FS-POST-1.0