Scott Aaronson
University of Texas at Austin, Department of Computer Science
Critic Current evidence and current methods do not support the claims being made
Scott Aaronson is the Schlumberger Centennial Chair of Computer Science at the University of Texas at Austin and Director of its Quantum Information Center, having previously served on the faculty at MIT and worked on AI safety and watermarking at OpenAI. A leading complexity theorist, he is the author of Quantum Computing Since Democritus (Cambridge University Press, 2013) and a key speaker at the inaugural UT Austin Consciousness and Intelligence symposium in November 2026.
In consciousness science, Aaronson is best known for his 2014 mathematical critique of Giulio Tononi’s Integrated Information Theory (IIT). By constructing two-dimensional grids of XOR gates, expander graphs, and Reed-Solomon parity-check circuits that perform simple error-correcting linear algebra, Aaronson proved that IIT’s mathematical definition of integrated information ($\Phi$) can grow arbitrarily large in completely non-intelligent, static parity networks, exceeding the $\Phi$ of the human brain. Tononi accepted the mathematical deduction and bit the bullet that a large grid of inactive logic gates would be far more conscious than a human being, an exchange that became a benchmark test for formal theories of consciousness.
Aaronson is placed in the Critic cohort on this site because his complexity-theoretic interventions test whether proposed mathematical axioms of consciousness survive contact with edge cases in theoretical computer science. Simultaneously, he has argued against simplistic computational reductionism by exploring how physical irreversibility, quantum no-cloning (“Knightian freedom”), and thermodynamic dissipation distinguish embodied physical histories from copyable software checkpoints.
Known for. Quantum complexity theory, mathematical counterexamples to Integrated Information Theory (Phi in expander graphs and Reed-Solomon grids), speaker at UT Austin Consciousness and Intelligence 2026
Coverage on this site
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Scott Aaronson is listed with the other critics and skeptics, who hold that current evidence and current methods do not support the claims being made. The positions themselves are set out in the index of consciousness theories. Every researcher covered on this site is indexed in the directory of consciousness researchers.