
Free Agents
How Evolution Gave Us Free Will
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Narrado por:
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Kevin J. Mitchell
Acerca de esta escucha
This audiobook narrated by neuroscientist Kevin Mitchell presents an evolutionary case for the existence of free will.
Scientists are learning more and more about how brain activity controls behavior 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 emerged 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 this matters.
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Historia
What is life? This is among the most difficult open problems in science, right up there with the nature of consciousness and the existence of matter. All the definitions we have fall short. None help us understand how life originates or the full range of possibilities for what life on other planets might look like. In Life as No One Knows It, physicist and astrobiologist Sara Imari Walker argues that solving the origin of life requires radical new thinking and an experimentally testable theory for what life is.
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Fascinating thought patterns
- De John linden en 09-10-24
Makes sense
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Excellent non religious explication
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I chose to listen to this breath of fresh air
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Best argument against the free will.
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From there, the author goes to noise in the brain (which, again, has no apparent connection to quantum mechanics and is therefore fully determined) to describe how the brain makes decisions. That is the very strong part of the book. It is also clearly the author's specialty and I wish he would have stuck closer to it.
The main idea comes down to William James' notion of "two stage" free will. That can be summarized as, "thoughts come to us freely, decisions flow from us willfully." In other words, the "freedom" in free will lies in the choices that appear to us (which is based on our life histories as well as noisy events in the brain), while decisions stem from a "competition" between neurons that depends on our goals and expected values. I found this thesis very convincing, even if it does not refute determinism in any way.
Overall, I recommend the book for the central idea, which is genuinely insightful, even if surrounded by unconvincing material.
Unconvincing, but worthwhile
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If you've read Sapolsky or Dennet or Harris on free will, this will be an excellent rebuttal. If you've had a sense that they were missing something key about the nature of free will, this is a fleshed-out answer to their ignorance.
Dr. Mitchell puts muscle and bone to a framework that successfully synapses a hopeful response to a seemingly mechanistic universe. He does so with scientific rigor that is also free of unnecessary superstition or mysticism. This book is a triumph of thought and scholarship.
I'm grateful to have found this read, and for the author's courage and talent in bringing it to being. You will be too.
The best treatment of Free Will available today.
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After listening to his audiobook, my takeaway is this: life is the structuring of an organism to take actions that preserve it. And for more complex life, we are structured to have a whole hierarchy of modifiable goals to drive behavior.
Decisions often take time, as we contemplate scenarios, payoff, and risks.
Planets have no agency - they succumb to the laws of physics. Life has agency because it has built into itself the use of the laws of physics to obey goals that it sets in place, and which can be refined by the experience within a lifetime.
I like his double reference to agency being like a helix or slinky through time - the agent's actions updating the environment which updates the agent's next move, etc. I like this because my own idea is that the perceptual spacetime in which stimuli are depicted to the 'self' network is drawn or referenced by a 'helix' tracing (for traveling/staggered unified brain activity; or 'frames' for standing waves of unified brain activity).
There are a ton of excellent ideas in this book, including the idea that primary cortices may serve two functions simultaneously (one, process the incoming stimuli; two, hold onto current context of consciousness and link it to incoming stimuli as needed/desired).
Adding Clarity to Agency
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Best book out there on many topics
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wants his cake
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While he does occasionally drag us into the weeds of Evolution, for the most part Mitchell has created arguments that can be easily followed by the Layman. Four Stars. ****
A strong case is made.
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