EVIDENCE BY CHAPTER
Evidence records connected to this chapter of The Human OS Manual.
The entries below follow the chapter’s printed endnotes into the digital Evidence Map.
The printed notes preserve the source trail attached to the first edition. The digital record adds a current interpretation of what the evidence supports, what it does not establish, and whether anything has changed since publication.
Emerging or mechanistic evidence
Output System · State System · Recovery System
Book reference: Performance can be preserved under strain by paying hidden cognitive and physiological costs., Under sustained load, compensatory effort can preserve performance while flexible cognitive control becomes less reliable.
Last reviewed: August 11, 2026
Strong human evidence
State System · Output System
Book reference: Stress can narrow attention, working memory, and top-down cognitive control., Under sustained load, compensatory effort can preserve performance while flexible cognitive control becomes less reliable., Stress can reduce flexibility and make habitual responses feel more available., Stress can narrow flexibility and make familiar responses easier to retrieve.
Last reviewed: August 11, 2026
The book chapter carries the argument. These entries preserve the evidence trail attached to its specific claims.