Lenore Blum

Lenore Blum is Distinguished Career Professor of Computer Science Emerita at Carnegie Mellon University. She is a renowned theoretical computer scientist, mathematician, and Fellow of the American Association for the Advancement of Science (AAAS) and the American Mathematical Society (AMS).

With Manuel Blum, Lenore Blum developed the “Conscious Turing Machine” (CTM), a formal mathematical architecture inspired by Alan Turing’s simple model of computation and Bernard Baars’s Global Workspace Theory. The CTM formalizes conscious awareness, attention, inner speech, and subjective feelings as mathematically rigorous algorithms operating over a Short-Term Memory buffer connected to an array of specialized parallel processors through competitive up-tree and broadcast down-tree channels.

Blum’s work demonstrates that the functional hallmarks of consciousness, including the “feeling” of qualia and subjective experience, can be formally modeled and analyzed within theoretical computer science without biological chauvinism.

Known for. Conscious Turing Machine (CTM) formal architecture (with Manuel Blum), Blum-Shub-Smale (BSS) model of real computation, theoretical computer science

Coverage on this site

• Haofei Yu Lenore Blum and Manuel Blum CTM-AI Blueprint Conscious Turing Machine August 2026

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Lenore Blum is listed with the other functionalists and computationalists, who hold that what matters is the organisation of the processing, not the material. The theory family behind that position is set out in the index of consciousness theories. Every researcher covered on this site is indexed in the directory of consciousness researchers.