Simulation Is Not Genesis

Abstract

The traditional comparison between biological brains and artificial systems is becoming increasingly difficult to sustain in terms of individual properties. Artificial networks can exhibit recurrence, plasticity, critical or near critical dynamics, metastable behavior, high dimensional population activity, adaptive responses, and large scale connectivity. Whole brain simulations have reached tens of billions of neurons, while digital twin approaches can assimilate electrophysiological data from living brains and reproduce aspects of their changing dynamical states. Many properties once invoked to distinguish biological cognition from artificial systems can therefore already be reproduced, at least in partial or abstract form. This article argues that the decisive distinction lies elsewhere. Contemporary neuroscience increasingly describes the brain as a continuously active, plastic, context dependent dynamical system whose present organization reflects phylogenetic history, ontogenetic development, and lifelong plasticity. Simulation can reproduce increasingly detailed relations found in this organization. Yet these relations constitute a map of an already developed system. They do not thereby provide the developmental process through which that organization came into existence. The distinction is captured by separating simulation, reconstruction, and genesis. Simulation reproduces selected relations of an existing system. Reconstruction would reproduce the organization required to generate the relevant phenomenon. Genesis is the historical process through which that organization itself emerged. A complete record of developmental states would still be retrospective. It would not automatically constitute a prospective construction plan, because previous states contributed to changing the conditions under which later states became possible. This distinction does not imply that only biological material could ever support consciousness. Nor does it exclude the possibility that an artificial or synthetic system might initiate a new developmental history of its own. Such a case, however, would constitute a new genesis rather than the reconstruction of consciousness from a map of a mature brain. The argument therefore targets a specific but influential assumption: that increasingly complete reverse engineering of the present brain will eventually become a construction plan for consciousness.