Scientists are learning more and more about how brain activity controls behaviour and how neural circuits weigh alternatives and initiate actions. As we probe ever deeper into the mechanics of decision-making, many conclude that agency – or free will – is an illusion. In Free Agents, leading neuroscientist Kevin Mitchell presents a wealth of evidence to the contrary, arguing that we are not mere machines responding to physical forces but agents acting with purpose.
Traversing billions of years of evolution, Mitchell tells the remarkable story of how living beings capable of choice arose from lifeless matter. He explains how the emergence of nervous systems provided a means to learn about the world, granting sentient animals the capacity to model, predict, and simulate. Mitchell reveals how these faculties reached their peak in humans with our abilities to imagine and to be introspective, to reason in the moment, and to shape our possible futures through the exercise of our individual agency. Mitchell's argument has important implications – for how we understand decision-making, for how our individual agency can be enhanced or infringed, for how we think about collective agency in the face of global crises, and for how we consider the limitations and future of artificial intelligence.
An astonishing journey of discovery, Free Agents offers a new framework for understanding how, across a billion years of Earth history, life evolved the power to choose, and why it matters.
Kevin J. Mitchell is associate professor of genetics and neuroscience at Trinity College Dublin. He is the author of Innate: How the Wiring of Our Brains Shapes Who We Are (Princeton) and runs a popular blog, Wiring the Brain. His work has appeared in publications such as Scientific American, the Guardian, and Psychology Today.
"Mitchell's compelling and absorbing book acts both as a synthesizing primer about evolution and a powerful argument for free will. Its importance and quality are undeniable. A bold, brilliant must-read that should reach a large audience."
– Kirkus Reviews, starred review
– Publishers Weekly
"Does free will exist or is it an illusion? This captivating book explores the science behind the existence of free will. Writing elegantly about the complexities of this area of research, Mitchell provides a deeper understanding of the concept of free will and its brain basis, and explores the implications for consciousness, moral responsibility, the law, and AI."
– Sarah-Jayne Blakemore, author of Inventing Ourselves: The Secret Life of the Teenage Brain
"Brilliant, powerfully argued, and important, Free Agents shakes up the age-old debate about free will by emphasizing what humans share with all organisms – all forms of life, even the simplest, make choices and have agency. Applying that insight and putting humans in an evolutionary context, Kevin Mitchell's innovative account is required reading for anyone interested in this fundamental question. Highly recommended!"
– Matthew Cobb, author of Life's Greatest Secret: The Race to Crack the Genetic Code
"At long last, a fresh approach to the free will question that is both sensible and scientifically plausible: no fudging, no hand-waving, no philosophical flimflam. Mitchell brilliantly delivers the goods, drawing on a deep understanding of evolutionary biology, neuroscience, and physics. He has an uncanny knack for rendering a complex story easy to grasp without dumbing things down. A literary gem that is downright fun to read."
– Patricia S. Churchland, author of Conscience: The Origins of Moral Intuition
"Mitchell argues that the dictates of biology and evolution have resulted in a brain intrinsically capable of self-guided action, and he suggests mechanisms that allow and even impose increasing agency on thought and behavior. Sometimes whimsical, always brimming with knowledge, Free Agents is a lively and challenging defense of free will from a neuroscientist's viewpoint."
– Cori Bargmann, Rockefeller University
"Kevin Mitchell brings clear thinking and scientific rigor to a vital topic that leaves many people confused, caught between the preposterous alternatives that either humans are robots or that every time we make a decision, a miracle occurs."
– Steven Pinker, Johnstone Family Professor of Psychology, Harvard University, and author of How the Mind Works
"If you believe that free will is an illusion, you will change your mind after reading this irresistible book. Mitchell tells the epic story of the evolution of life from its origins to the emergence of purposeful behavior as you have never heard it before. He forcefully counters reductionism and makes a compelling case for agency as the central condition of living beings."
– Uta Frith, coauthor of What Makes Us Social?