SIG-MRG 2026-07-16

Session Recording Summary · 71m 38s · Full notes ↗

Reading: An excerpt from a book by **André Leroi-Gourhan** (rendered phonetically in the transcript as "Leroy Gouran/Gourin/Gwan"), beginning one page into a chapter titled **"Freeing Up Memory"** (participants reference page ~232). The discussion centers on his three levels of memory (automatic, mechanical, and lucid) and the analogy between the nervous system and a machine. The session is part of a "memory research group."

The session opened with a check-in round in which participants shared personal examples of "mechanical" habits that are hard to teach verbally (chicken sexing, driving, touch typing, hanging laundry, organizing a tech bag). Participants then read the excerpt silently for ~30 minutes before discussing Leroi-Gourhan's levels of memory, the tension between individual freedom and its dependence on collective/societal memory, and how his machine-to-nervous-system analogy holds up against contemporary technology and enactivist/embodied-cognition frameworks. The conversation closed with planning for the next session.

• **Opening theme — tacit, hard-to-teach skills:**
• **Kei's framing:** Beneath individual habits (how you store things, clean a sink) lies a deeper *societal/cultural memory* (e.g., cleaning to reduce germs). The text compares the human situation to different classes of animals.
• **Leroi-Gourhan vs. Zerzin (Mark's contribution):** Mark contrasted Leroi-Gourhan with anarcho-primitivist thinker **John Zerzan**, whom he read as a teenager.
• **The sinusoidal curve of lucidity (Mark):** Troughs = mechanical series; peaks = adjustments to those series. Freedom resides in the peaks of lucidity, where one can consciously adjust otherwise automatic behavior.
• **Human vs. earthworm distinction (rtk947):** The distinguishing human trait is the ability to *conceptualize* and ask "let's do this instead," then re-externalize that choice back into culture/cultural memory (e.g., building an electric toothbrush that then reshapes behavior). He suspects there is more continuity between earthworm and human behavior than the text implies.
• **Kei's central discussion prompt:** Leroi-Gourhan's three levels — automatic memory (earthworm/nervous system as simple machine, born knowing what to do, can't "choose a script"), mechanical memory, and lucid consciousness. Kei questioned whether the machine analogy still holds now that machines adapt to feedback (e.g., his electric toothbrush that reports which mouth areas are under-brushed, forming a "synaptic" feedback loop). He invoked **Michael Levin's** work on electrically reprogramming planarians/worms to be reborn with multiple heads (heritable across generations) as evidence that some "liberation" may be available to simpler creatures.

Questions & Disagreements: - **Does symbolic substrate matter? (Sachin):** If "lived memory" (vs. static memory, from Kei's earlier "artificial memory" paper) can be continuously transmitted and changed in animals as well as humans, does that negate the need for a symbolic substrate? He was unsure and wanted to reread. - **How much continuity is there between earthworm and human? (rtk947):** He thinks the text may understat

Participants: Jeremiasz Rzenno | CET, Kei 🗝, Mark Elder, rtk947, Sachin, Vansh Kumar UTC-8, Wip, Yatú, AH, ayseayse__, Aaron Z Lewis