MTH Fiction Series · V of V · Peter Watts — Blindsight

Consciousness Overhead

Watts's Blindsight proposes that self-awareness is not the summit of intelligence but a costly accessory to it — and that the Scramblers, more capable than humans in every measurable way, are not conscious at all. If self-modeling consumes resources without buying capability, what happens to consciousness across many cycles of self-redesign?

Selection Parameters · toy model
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Conscious Fraction vs Redesign Cycles
Effective selection per cycle —
Half-life (cycles) —
Conscious fraction at horizon —
P(detected mind is conscious) —
Set parameters to calculate.
The Scramblers
The aliens of Blindsight process information faster than humans, predict human behavior, and solve problems that defeat the crew — yet experiments aboard Rorschach suggest no one is home. They are intelligent without being sentient. Watts's wager is that the two properties are separable, and that most SETI quietly assumes they are not: we search for minds that want to be found, by minds like ours.
The Cost of Self
The novel's argument, developed in its appendix, is that recursive self-modeling consumes cognitive resources without adding capability that a non-conscious architecture couldn't match — overhead, in engineering terms. The numbers in this tool are deliberately unanchored: no one has measured the joule cost of qualia. What the model shows is structural — under sustained competition, any nonzero overhead compounds toward elimination across enough redesign cycles.
Doubly Silent
Combined with the Macro Transcension Hypothesis, Watts adds a second layer to the Great Silence. MTH explains why transcended civilizations are hard to see: they migrated inward. Blindsight explains why they don't want to be seen: after enough self-optimization there may be nothing left that wants anything in the way a beacon-builder wants. Gone inward, and no longer the kind of thing that signals — doubly silent.
What This Does to SETI at ωCen

This is the series capstone, and the most corrosive entry. Banks, Egan, Stross, and Clarke all describe civilizations that chose inwardness but remained, recognizably, minds — entities that could in principle decide to answer a signal. Watts removes that comfort. If consciousness is overhead and competition is real, the slider settings that preserve conscious majorities across deep time are narrow: low competition, strong attachment, or few redesign cycles. Omega Centauri's 11–14 Gyr stellar populations have had time for hundreds of thousands of cycles.

The practical implication for ωCen observation is a shift in search strategy. Beacon-style searches — optical or radio — assume an intent to communicate that this model erodes. What survives the erosion is physics: waste heat, structured accretion, the thermodynamic residue that computation cannot hide regardless of whether anything inside is experiencing it. That is why the OCS falsification program weights passive signatures over messages. We may not be looking for someone. We may be looking for something — and the instruments don't care about the difference.

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