A methodological framework for research transparency, emphasizing the dual importance of documenting both results and context Abstract Why and What argues that scientific literature overwhelmingly records what was discovered while omitting why it was pursued, how failures shaped the path, and what context enabled breakthroughs. This omission makes discoveries appear accidental, hinders reproducibility, and obscures the actual process of scientific advancement. The paper establishes that documenting process, failures, reasoning, and context is not supplementary to science but integral to it. Results without context appear arbitrary; failures without documentation waste collective effort; journeys without records erase tacit knowledge. Modern digital tools make complete transparency feasible at minimal cost, enabling science to preserve both destination and map. This framework builds on earlier methodological work: The Compass Needle: A Philosophy of Truth Through Calibration (10.5281/zenodo.17633847) — establishing calibration as the foundation of truth‑seeking The Constraint Paradox: When Expertise Prevents Discovery (10.5281/zenodo.17762650) — documenting how expertise systematically blocks breakthroughs The Practice of Human‑AI Synthesis (10.5281/zenodo.17763521) — transparency in collaborative discovery Together, these works establish the lineage: truth calibration → constraint awareness → synthesis methodology → documentation duality. Background Traditional publishing emphasizes polished results, omitting failures, reasoning, and context due to historical constraints and cultural norms. This paper reframes documentation as a duality: What (results) and Why (context). Both are required for complete knowledge. Failures become navigational data, journeys contain tacit knowledge, and transparency accelerates collective progress. Key Contributions Duality Principle: Results (What) and context (Why) are inseparable for complete knowledge Failure as Compass: Negative results define boundaries and redirect inquiry Journey as Knowledge: Iterative refinement and tacit insights are essential to understanding Modern Feasibility: Digital tools enable complete documentation at minimal cost Methodological Reform: Proposes new standards for transparency in research logs, failures, timelines, and reasoning Research Impact This work contributes to philosophy of science and methodology by: Establishing documentation duality as a core principle of knowledge transmission Demonstrating how failures and context accelerate collective progress Providing practical frameworks for transparent research documentation Extending ITS methodology into the domain of knowledge preservation Offering cultural and institutional reforms for reproducibility and trust Access and Documentation ORCID: https://orcid.org/0009-0003-4876-9273 GitHub: https://github.com/Neuron-Soul-AI/Neuron-Soul-AI LinkedIn: https://www.linkedin.com/in/marcelo-emanuel-paradela-teixeira-702082382/ Email: marcelo.soul.ai@gmail.com License: CC BY‑NC 4.0 © Marcelo Emanuel Paradela Teixeira 2025