Penumbra

    Penumbra · Blog

    Ideas behind the build.

    Essays on domain models, AI systems, and expert judgment. The ideas behind software that understands the world it works in.

    cognitive firmJune 15, 202615 min read

    The Nature of the Cognitive Firm

    Coase explained why firms exist: to minimize transaction costs. In an age of elastic intelligence, firms exist to maintain coherence across distributed intelligence. Why coordination is giving way to coherence.

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    Abstract visualization of distributed intelligence cohering around a shared semantic substrate
    polymantic systemsJune 11, 202611 min read

    Polymantic Systems

    Polymantic systems let agents, tools, humans, and workflows operate through many governed views over one shared semantic substrate.

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    Colorful geometric architecture with bold text reading Polymantic Systems
    AI agentsJune 9, 20269 min read

    Why AI Agents Need Ontology

    AI agents need ontology, domain models, memory, guardrails, and provenance to act reliably inside real business workflows.

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    Abstract domain model showing connected business concepts for AI agents
    agentsFebruary 5, 202511 min read

    Gundam for Your Brain

    Why AI for serious knowledge work should act less like a generic assistant and more like a cognitive exoskeleton for expert judgment.

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    Gundam mech silhouette representing a cognitive exoskeleton for knowledge work
    consultingFebruary 5, 20259 min read

    The Trillion-Dollar Worldview Rental Economy

    Consulting sells temporary cognition. Penumbra helps companies own the method, lens, and domain context behind the work.

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    Abstract visualization of worldview structures and consulting frameworks