Abstract Alexander Wendt raises many interesting questions in this book, but to get to the answers he wants, he relies on a misunderstanding of the nature of the quantum states of macroscopic objects.
There is an underlying assumption in the social sciences that consciousness and social life are ultimately classical physical/material phenomena. In this ground-breaking book, Alexander Wendt challenges this assumption by proposing that consciousness is, in fact, a macroscopic quantum mechanical phenomenon. In the first half of the book, Wendt justifies the insertion of quantum theory into social scientific debates, introduces social scientists to quantum theory and the philosophical controversy about its interpretation, and then defends the quantum consciousness hypothesis against the orthodox, classical approach to the mind-body problem. In the second half, he develops the implications of this metaphysical perspective for the nature of language and the agent-structure problem in social ontology. Wendt's argument is a revolutionary development which raises fundamental questions about the nature of social life and the work of those who study it.
Abstract Alexander Wendt suggests that an emerging field of research on quantum consciousness may have important implications for our understanding of the social world as well. He wants us to consider that the operations of the brain are not “classical” but rather quantum‐mechanical, and that this sheds light on the social worker as well. This article casts doubt on these claims. First, the idea of panpsychism (all physical things possess features of consciousness) is implausible on its face. Second, the findings of “quantum decision theory” are much more limited than Wendt recognizes. Third, the biological quantum effects currently subject to investigation are limited in their application to brains and persons by unavoidable limits of time and space scale on quantum effects. The “brain as quantum computer” or “brain as wave function” theory is very implausible given current knowledge.
Alexander Wendt’s Quantum Mind and Social Science reopens the question of the relevance of quantum mechanics to the social sciences. In response, I argue that due to “quantum decoherence,” the macroscopic world filters out quantum effects. Moreover, quantum decoherence makes it unlikely that the theory of quantum brains, on which Wendt relies, is true. Finally, while quantum decision theory is a potentially revolutionary field, it has not clearly accounted for alleged anomalies in classical understandings of decision making. However, the logic of quantum decoherence can motivate a new approach to the structure-agent problem.