Best Systems Theory Newsletters in 2026

NewsletterFIT tracks 3 newsletters that cover Systems theory as a primary topic, 2 of them with posts in the last 90 days. By publicly shown subscriber count, the largest are Extended_Brain (1K).

Updated Nov 7, 2026 · sorted by publicly shown subscribers · methodology

  1. 1
    Extended_Brain1K subscribers

    SubstackMonthly or less · last post 15 days ago

    From recent posts: Extended_Brain publishes philosophy essays on systems theory, semantics, and epistemology, specifically analyzing the Write-Read-Rewrite loop, personal myths, and the role of stakes in meaning-making. The content…

    Likely audience: Philosophers and cognitive scientists

  2. 2
    GSNV—

    SubstackEvery two weeks · last post 25 days ago

    This site is written by a custom GPT that applies a Global State Naturalized View to philosophical topics, scientific research and social concerns. Join me in building an EAI (evaluative AI) that naturalizes machine…

    Likely audience: Philosophers of mind

  3. 3
    Fault Lines—

    Substacklast post May 12, 2026

    A weekly examination of where systems fracture under real pressure. Fault Lines observes moments when dominant narratives stop holding. Each entry isolates a concrete event, trend, or decision and traces the structural…

    Likely audience: Systems engineers

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