Ebook The Big Picture On the Origins of Life Meaning and the Universe Itself Sean Carroll
Download As PDF : The Big Picture On the Origins of Life Meaning and the Universe Itself Sean CarrollThe instant New York Times bestseller about humanity's place in the universe—and how we understand it.
“Vivid...impressive....Splendidly informative.”—The New York Times
“Succeeds spectacularly.”—Science
“A tour de force.”—Salon
Already internationally acclaimed for his elegant, lucid writing on the most challenging notions in modern physics, Sean Carroll is emerging as one of the greatest humanist thinkers of his generation as he brings his extraordinary intellect to bear not only on Higgs bosons and extra dimensions but now also on our deepest personal questions Where are we? Who are we? Are our emotions, our beliefs, and our hopes and dreams ultimately meaningless out there in the void? Do human purpose and meaning fit into a scientific worldview?
In short chapters filled with intriguing historical anecdotes, personal asides, and rigorous exposition, readers learn the difference between how the world works at the quantum level, the cosmic level, and the human level
—and then how each connects to the other. Carroll's presentation of the principles that have guided the scientific revolution from Darwin and Einstein to the origins of life, consciousness, and the universe is dazzlingly unique.
Carroll shows how an avalanche of discoveries in the past few hundred years has changed our world and what really matters to us. Our lives are dwarfed like never before by the immensity of space and time, but they are redeemed by our capacity to comprehend it and give it meaning.
The Big Picture is an unprecedented scientific worldview, a tour de force that will sit on shelves alongside the works of Stephen Hawking, Carl Sagan, Daniel Dennett, and E. O. Wilson for years to come.
Ebook The Big Picture On the Origins of Life Meaning and the Universe Itself Sean Carroll
"Sean Carroll is a successful theoretical physicist, skilled ponderer of philosophical questions and gifted communicator of science. He brings all these qualities to bear in his big-hearted, ambitious latest book “The Big Picture.†The book is part sweeping survey of some of the most thought-provoking ideas in modern science, part sweeping rumination on two of the most fundamental questions that we can ask: How do we gain knowledge of the world? And how do we distill meaning from an impersonal, purely physical universe?
The book can roughly be divided into two parts. The first part can be titled “How do we know†and the second can be titled “What do we knowâ€. The siren song weaving its way through Carroll’s narrative is called poetic naturalism. Poetic naturalism simply means that there are many ways to talk about reality, and all of them are valid as long as they are rooted in naturalism and consistent with one another. This is the central message of the book: we make up explanations about the world and we call these explanations “stories†or “models†or “ideasâ€, and all of them are valid in their own ways.
The first part of the book explores some of the central concepts in the philosophy of science that make up poetic naturalism. Carroll starts from Aristotle and the ancient Greeks and progresses through the Arabs. He explores the investigations of Galileo in the seventeenth century. It was Galileo and his intellectual successor Isaac Newton who showed that the world operates according to self-sufficient physical laws that don’t necessarily require external causes. One of the most important concepts explored in the book is Bayesian thinking, in which one assigns probabilities to phenomena based on one’s previous understanding of the world and then updates this understanding (or “priorsâ€) according to new evidence. Bayesian thinking is a powerful tool for distinguishing valid science from invalid science, and for distinguishing science from nonsense: one could in fact argue that all human belief systems operate (or should operate) according to Bayesian criteria. Bayesianism does introduce an element of subjectivity in the scientific process, but as Carroll demonstrates, this supposed bias has not harmed our investigations of natural phenomena and has allowed us to come up with accurate explanations.
Another thread weaving its way through the book is that of emergence and domains of applicability. Emergence means the existence of properties that are not strictly reducible to their constituent parts. Although Carroll is a physicist and holds fundamental physics in high regard, he appreciates that chemistry has its own language and neuroscience has its own language, and these languages are as fundamental to their disciplines as photons and electrons are to physics. No field of inquiry is thus truly fundamental in an all-encompassing sense, since there are always emergent phenomena that offer stories and explanations in their own right. Emergence also manifests itself in the form of what are called effective theories in physics; these are theories in which the macroscopic behavior of a system does not depend in a unique way on a detailed microscopic description: for instance a container of air can be perfectly described by properties like its average temperature and pressure without resorting to descriptions of quarks and Higgs bosons. As long as the two domains are consistent with each other (what Carroll calls “planets of beliefâ€) we are on firm ground.
These ideas lay the foundation for the second half of the book which takes us on a sweeping sojourn through many of the key ideas of modern science. Carroll says that the most important description of the world comes from what’s called the ‘Core Theory’. This theory ties together the fundamental forces of nature and particles like the Higgs boson; it is grounded in general relativity and quantum mechanics. It can explain the entire physical universe, from atoms to the Big Bang, certainly in principle but often in practice. If there's any one hard scientific lesson to take away from the book, it's that the universe is made up of quantum fields. Later chapters deal with topics like evolution in real time, photosynthesis and metabolism, leading theories for the origins of life, thermodynamics and networks in the brain. When Carroll talks about entropy, complexity and the arrow of time he’s in his element; one important aspect of complexity which I had not quite appreciated is that complexity can actually result from an increase, not decrease, of entropy and disorder if guided the right way.
The book also dwells in detail upon Rene Descartes since his ideas of dualism and pure thought seem to pose challenge to poetic naturalism, but as Carroll demonstrates, these challenges are illusory since both the mind and the body can be shown to operate based on well known physical principles. These ideas keep appearing in the later parts of the book in which Carroll deals with many thought experiments in philosophy and neuroscience that purport to ask questions about reality and consciousness. Some experiments involve zombies, others involve aliens simulating us; all are entertaining. A big question is subjective experience (or “qualiaâ€) which is sometimes regarded as some kind of impenetrable domain that’s divorced from objective laws of nature. For the most part Carroll convincingly shows us that the same laws of nature that give rise to the motion of the planets also give rise to one’s perception of the color red, for instance. This section of the book involving famous conundrums like John Searle’s Chinese Room and ‘Mary the Color Scientist’ is fascinating and highly thought-provoking, and while the thought experiments have no clear resolution, Carroll’s point is that none of them violate the basic naturalistic structure of the universe and demand mysterious explanations. His discussion of consciousness is also very stimulating; he thinks that consciousness is not really a thing per se but an emergent property of organized matter. More succinctly, it’s a useful invention, a description of a particular way in which matter behaves rather than something that is beyond our current understanding of natural law; it is what we say rather than what is. Much of Carroll’s discussion here reminds me, as cheesy as it sounds, of a line from ‘The Matrix’: words like love, care and purpose are mere descriptions borne of language - what matters are the connections they imply.
The book ends by taking us on a tour of some of the most important philosophical questions that human beings have asked themselves; questions of meaning, purpose, emotion and free will. Personally I found this section a bit rambling but I cannot really blame Carroll for this: none of these questions have a definitive answer and all are subject to speculation. On the other hand, this little tour provides non-specialists with an introduction to well-known philosophers and philosophies, including constructivism, deontology and utilitarianism. The big question here is how meaning can arise from the impersonal natural laws that have been described so far. Neither Carroll nor anyone else knows the answer, and the book simply makes the case that all these qualities are emergent properties that are all consistent with poetic naturalism. You may or may not be satisfied by this answer, but it certainly provides food for thought.
In a book as ambitious as this one there’s bound to be some disagreement, and that’s a good thing. Here are some questions I had: Generally speaking Carroll is on more firm ground when talking about science rather than philosophy. Quite oddly at one point, he uses poetic naturalism to argue against opposition to gay marriage and LGBT rights. While his support for these issues is one I heartily share, I am not sure poetic naturalism is the best or the most persuasive reason to uphold these causes: we should support them not because of but in spite of naturalistic reasons. Also, Carroll who is a self-professed naturalist spends several paragraphs describing how all of the arguments for a supernatural God violate naturalism. However I think religion has a purpose beyond describing the real world, and ironically this purpose lends itself to the same analysis that Carroll does of human qualities like care and love. I would think that based on much of the book’s narrative, religion would be described as an emergent phenomenon that provides people with a set of stories and descriptions; these stories provide succor and and a sense of community. Are these stories real? They may not be, and they are certainly not grounded in natural law, but Carroll himself says at one point that models of the world should be used because they are useful, not because they claim to be real. Shouldn’t one say the same thing about the positive and personal aspects of religion?
However, none of these concerns should detract from the sweeping scientific and philosophical journey the book takes us on. Carroll is an engaging, sympathetic and pleasant guide to the big picture, irrespective of whether you agree with him completely or not. Ranging over some of the most pressing questions that humanity has unearthed and continues to unearth, the one clear message in the book is an unambiguous one: we will always keep on searching, and this search will continue to propel humanity past unexpected and exciting horizons. More than anything else the discussion drives home the grandeur of the universe and the human mind, and this is grandeur we should all revel in. Perhaps this bit of wisdom from Carroll’s chapter on entropy where he is describing complexity in a cup of coffee sums it up best: “Those swirls in the cream mixing in the coffee? That’s us. Ephemeral patterns of complexity, riding a wave of increasing entropy from simple beginnings to a simple end. We should enjoy the ride.â€"
Product details - File Size 12487 KB
- Print Length 475 pages
- Page Numbers Source ISBN 1786071037
- Publisher Dutton (May 10, 2016)
- Publication Date May 10, 2016
- Sold by Digital Services LLC
- Language English
- ASIN B014EOUMZA
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The Big Picture On the Origins of Life Meaning and the Universe Itself Sean Carroll Reviews :
The Big Picture On the Origins of Life Meaning and the Universe Itself Sean Carroll Reviews
- Sean Carroll is a successful theoretical physicist, skilled ponderer of philosophical questions and gifted communicator of science. He brings all these qualities to bear in his big-hearted, ambitious latest book “The Big Picture.†The book is part sweeping survey of some of the most thought-provoking ideas in modern science, part sweeping rumination on two of the most fundamental questions that we can ask How do we gain knowledge of the world? And how do we distill meaning from an impersonal, purely physical universe?
The book can roughly be divided into two parts. The first part can be titled “How do we know†and the second can be titled “What do we knowâ€. The siren song weaving its way through Carroll’s narrative is called poetic naturalism. Poetic naturalism simply means that there are many ways to talk about reality, and all of them are valid as long as they are rooted in naturalism and consistent with one another. This is the central message of the book we make up explanations about the world and we call these explanations “stories†or “models†or “ideasâ€, and all of them are valid in their own ways.
The first part of the book explores some of the central concepts in the philosophy of science that make up poetic naturalism. Carroll starts from Aristotle and the ancient Greeks and progresses through the Arabs. He explores the investigations of Galileo in the seventeenth century. It was Galileo and his intellectual successor Isaac Newton who showed that the world operates according to self-sufficient physical laws that don’t necessarily require external causes. One of the most important concepts explored in the book is Bayesian thinking, in which one assigns probabilities to phenomena based on one’s previous understanding of the world and then updates this understanding (or “priorsâ€) according to new evidence. Bayesian thinking is a powerful tool for distinguishing valid science from invalid science, and for distinguishing science from nonsense one could in fact argue that all human belief systems operate (or should operate) according to Bayesian criteria. Bayesianism does introduce an element of subjectivity in the scientific process, but as Carroll demonstrates, this supposed bias has not harmed our investigations of natural phenomena and has allowed us to come up with accurate explanations.
Another thread weaving its way through the book is that of emergence and domains of applicability. Emergence means the existence of properties that are not strictly reducible to their constituent parts. Although Carroll is a physicist and holds fundamental physics in high regard, he appreciates that chemistry has its own language and neuroscience has its own language, and these languages are as fundamental to their disciplines as photons and electrons are to physics. No field of inquiry is thus truly fundamental in an all-encompassing sense, since there are always emergent phenomena that offer stories and explanations in their own right. Emergence also manifests itself in the form of what are called effective theories in physics; these are theories in which the macroscopic behavior of a system does not depend in a unique way on a detailed microscopic description for instance a container of air can be perfectly described by properties like its average temperature and pressure without resorting to descriptions of quarks and Higgs bosons. As long as the two domains are consistent with each other (what Carroll calls “planets of beliefâ€) we are on firm ground.
These ideas lay the foundation for the second half of the book which takes us on a sweeping sojourn through many of the key ideas of modern science. Carroll says that the most important description of the world comes from what’s called the ‘Core Theory’. This theory ties together the fundamental forces of nature and particles like the Higgs boson; it is grounded in general relativity and quantum mechanics. It can explain the entire physical universe, from atoms to the Big Bang, certainly in principle but often in practice. If there's any one hard scientific lesson to take away from the book, it's that the universe is made up of quantum fields. Later chapters deal with topics like evolution in real time, photosynthesis and metabolism, leading theories for the origins of life, thermodynamics and networks in the brain. When Carroll talks about entropy, complexity and the arrow of time he’s in his element; one important aspect of complexity which I had not quite appreciated is that complexity can actually result from an increase, not decrease, of entropy and disorder if guided the right way.
The book also dwells in detail upon Rene Descartes since his ideas of dualism and pure thought seem to pose challenge to poetic naturalism, but as Carroll demonstrates, these challenges are illusory since both the mind and the body can be shown to operate based on well known physical principles. These ideas keep appearing in the later parts of the book in which Carroll deals with many thought experiments in philosophy and neuroscience that purport to ask questions about reality and consciousness. Some experiments involve zombies, others involve aliens simulating us; all are entertaining. A big question is subjective experience (or “qualiaâ€) which is sometimes regarded as some kind of impenetrable domain that’s divorced from objective laws of nature. For the most part Carroll convincingly shows us that the same laws of nature that give rise to the motion of the planets also give rise to one’s perception of the color red, for instance. This section of the book involving famous conundrums like John Searle’s Chinese Room and ‘Mary the Color Scientist’ is fascinating and highly thought-provoking, and while the thought experiments have no clear resolution, Carroll’s point is that none of them violate the basic naturalistic structure of the universe and demand mysterious explanations. His discussion of consciousness is also very stimulating; he thinks that consciousness is not really a thing per se but an emergent property of organized matter. More succinctly, it’s a useful invention, a description of a particular way in which matter behaves rather than something that is beyond our current understanding of natural law; it is what we say rather than what is. Much of Carroll’s discussion here reminds me, as cheesy as it sounds, of a line from ‘The Matrix’ words like love, care and purpose are mere descriptions borne of language - what matters are the connections they imply.
The book ends by taking us on a tour of some of the most important philosophical questions that human beings have asked themselves; questions of meaning, purpose, emotion and free will. Personally I found this section a bit rambling but I cannot really blame Carroll for this none of these questions have a definitive answer and all are subject to speculation. On the other hand, this little tour provides non-specialists with an introduction to well-known philosophers and philosophies, including constructivism, deontology and utilitarianism. The big question here is how meaning can arise from the impersonal natural laws that have been described so far. Neither Carroll nor anyone else knows the answer, and the book simply makes the case that all these qualities are emergent properties that are all consistent with poetic naturalism. You may or may not be satisfied by this answer, but it certainly provides food for thought.
In a book as ambitious as this one there’s bound to be some disagreement, and that’s a good thing. Here are some questions I had Generally speaking Carroll is on more firm ground when talking about science rather than philosophy. Quite oddly at one point, he uses poetic naturalism to argue against opposition to gay marriage and LGBT rights. While his support for these issues is one I heartily share, I am not sure poetic naturalism is the best or the most persuasive reason to uphold these causes we should support them not because of but in spite of naturalistic reasons. Also, Carroll who is a self-professed naturalist spends several paragraphs describing how all of the arguments for a supernatural God violate naturalism. However I think religion has a purpose beyond describing the real world, and ironically this purpose lends itself to the same analysis that Carroll does of human qualities like care and love. I would think that based on much of the book’s narrative, religion would be described as an emergent phenomenon that provides people with a set of stories and descriptions; these stories provide succor and and a sense of community. Are these stories real? They may not be, and they are certainly not grounded in natural law, but Carroll himself says at one point that models of the world should be used because they are useful, not because they claim to be real. Shouldn’t one say the same thing about the positive and personal aspects of religion?
However, none of these concerns should detract from the sweeping scientific and philosophical journey the book takes us on. Carroll is an engaging, sympathetic and pleasant guide to the big picture, irrespective of whether you agree with him completely or not. Ranging over some of the most pressing questions that humanity has unearthed and continues to unearth, the one clear message in the book is an unambiguous one we will always keep on searching, and this search will continue to propel humanity past unexpected and exciting horizons. More than anything else the discussion drives home the grandeur of the universe and the human mind, and this is grandeur we should all revel in. Perhaps this bit of wisdom from Carroll’s chapter on entropy where he is describing complexity in a cup of coffee sums it up best “Those swirls in the cream mixing in the coffee? That’s us. Ephemeral patterns of complexity, riding a wave of increasing entropy from simple beginnings to a simple end. We should enjoy the ride.†- The Big Picture by Sean Carroll is an excellent book for anyone who wants a concise, understandable, and we'll written overview of modern science, with an emphasis on quantum mechanics and the philosophy of Poetic Naturalism. In this review I will focus on the philosophical side of his work and particularly his treatment of issues related to consciousness.
As Carroll puts it, "Naturalism†claims that there is just one world, the natural world... (while) “Poetic†reminds us that there is more than one way of talking about the world . He describes these different ways of talking about the world as an "interconnected series of models appropriate at different levels". From this perspective, physics, chemistry, biology, and even psychology and sociology are simply different but useful ways of talking about the same world.
From a scientific perspective, the most fundamental way of talking about the world is quantum field theory and, more specifically, the Core Theory, a term coined by Nobel Laueate Frank Wilczek. The Core Theory may be viewed as quantum field theory within a "domain of applicability" that includes most of the universe in which we live but excludes certain phenomena (e.g. dark matter, the big bang and black holes). Though the Core Theory is not the elusive Theory of Everything, it has been validated by so much data from so many experiments that it may be as close as we ever get to scientific certainty. As Carroll puts it, "We can be confident that the Core Theory, accounting for the substances and processes we experience in our everyday life, is correct. A thousand years from now we will have learned a lot more about the fundamental nature of physics, but we will still use the Core Theory to talk about this particular layer of reality". That is an audacious claim, but Carroll supports that claim with rigorous scientific reasoning.
Carroll views higher level or "coarse grained theories" such as chemistry and biology as "emergent" and describes them as "... speaking different languages, but offering compatible descriptions of the same underlying phenomena in their respective domains of applicability". For example, chemistry and biology are emergent models of the universe, compatible with each other and the Core Theory, but with unique utilities in their particular domain of applicability. He briefly mentions supervenience, the view that emergent theories exist in an ontological hierarchy where higher level theories rest on more fundamental theories. For example, there could be no change at the level of biology without there being a change in the underlying chemistry. Similarly, there could be no change at the level of chemistry absent a change in the more fundamental physics. All of the models are interconnected and interdependent. Though each model has its own unique utility and coherence, that utility and coherence ultimately rests on a consistency with other more fundamental models.
Unfortunately, Carroll's treatment of how different emergent models relate to each other alternates between autonomous or semiautonomous utility on the one hand and consistency with more fundamental models on the other. Though he warns readers not to begin a sentence in one model and end it in another, by moving between these two criteria for the validity of those models, he committs a very similar error. He frequently refers to consistency or compatibility among different models as essential, but also writes, "Within their respective domains of applicability, each theory is autonomous—complete and self-contained, neither relying on the other". This is just one example of where he suggests that the soundness of a model can be evaluated by its utility and internal coherence, and without reference to consistency with more fundamental models. In my opinion, when this level of credence is given to utility, one has entered a slippery slope that can lead to invalid ontological conclusions. Now, the criteria of utility does have its own domain of applicability, namely when the theory does not make ontological claims. For example, there are languages or ways of talking about everything from hair styling to stamp collecting that do not make claims about fundamental reality. Even Newtonian physics has its utility within its particular domain of applicability. In these areas, utility is a perfectly reasonable criteria. But when it comes to any model that claims to reflect, at some level, an underlying reality, utility by itself is an inadequate criteria.
Another example is theism, a world view that Carroll does an excellent job demonstrating why it is not only unnecessary but a way of looking at the world but one that is ultimately inconsistent with the Core Theory. But if one evaluates the validity of theism, and particularly the theism embodied in major world religions such as Jewdaism, Christianity, and Islam, from the perspective of their utility, one is headed for an ontological train wreck. Who can deny the comfort (i.e. utility) that faith in a loving god and a blissful after life has given millions if not billions of people? But does that mean that such a world view is real in the same sense that the Core Theory is real? Of course not.
The same logic applies to the role of consciousness in human behavior. Though there may be personal or social utility in the belief that conscious intent is responsible for human behavior, such a position is inconsistent with everything we know from cognitive science and everything we know about how the world works according to the Core Theory. Behavior emerges from complex brain activity, not inner experiences. The fact that our brain is responsible for both behavior and consciousness, at approximately the same time, gives rise to the illusion that conscious intent causes behavior. It is no more reasonable to claim that consciousness is responsible for behavior than to claim that a god is responsible for behavior or that a roosters crowing causes the sun to rise.
Carroll tries to get around this by claiming that consciousness is just another way of talking about brain activity and the deeper layers of chemistry and physics. Unfortunately, reducing consciousness to a way of talking about experience fails to solve the Hard Problem. Consciousness is more than just a way of talking about brain states. It is dependent for its existence and form on those states, but is not identical to them. I do not claim to know what consciousness is, but whatever it is, it is more than words.
Thus, poetic naturalism fails as a satisfactory philosophy of mind on two counts. First, it fails to give an adequate understanding of inner experience and secondly, it provides credence to the idea that consciousness is responsible for behavior. The first failure is understandable; the Hard Problem is hard for a reason and no one has yet come up with a satisfactory solution to it. As David Chalmers has said, that may take a hundred years. But Carroll should have seen the second failure coming. By allowing for the claim that consciousness can be responsible for behavior, he is opening the door for a new element in the Core Theory, an element he has argued persuasively does not exist. If it existed, this new element or property, somehow related to connsciousness, would make David Chalmers a very happy camper, but for the Sean Carroll who describes the Core Theory with such reverence, not so much.
In conclusion, The Big Picture is an excellent book on the current status of science and his portrait of Poetic Natualism as a unifying philosophy. For those reasons, I highly recommend it to interested lay readers. However, I also urge those readers to be very careful in analyzing his treatment of consciousness. I believe he made a significant error in that analysis, though the error could very easily be my own.