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The Greatest Story Ever Told--So Far
Why Are We Here?
Table of Contents
About The Book
From award-winning physicist, public intellectual, and the bestselling author of A Universe from Nothing Lawrence Krauss, comes “a masterful blend of history, modern physics, and cosmic perspective that empowers the reader to not only embrace our understanding of the universe, but also revel in what remains to be discovered” (Neil deGrasse Tyson, American Museum of Natural History).
In this grand poetic vision of the universe, Lawrence Krauss tells the dramatic story of the discovery of the hidden world that underlies reality—and our place within it.
Reality is not what you think or sense—it’s weird, wild, and counterintuitive, and its inner workings seem at least as implausible as the idea that something can come from nothing.
With his trademark wit and accessible style, Krauss leads us to realms so small that they are invisible to microscopes, to the birth and rebirth of light, and into the natural forces that govern our existence. His unique blend of rigorous research and engaging storytelling invites us into the lives and minds of remarkable scientists who have helped unravel the unexpected fabric of reality with reasoning rather than superstition and dogma, and to explain how everything we see—and can’t see—came about. A passionate advocate for reason, Krauss gives the rationale for the seemingly irrational—and the mysteries and apparent contradictions of quantum physics, and explores what that means for our lives here on Earth—and beyond.
At its core, The Greatest Story Ever Told—So Far is about the best of what it means to be human—an epic history of our ultimately purposeless universe that addresses the question, “Why are we here?”
The simple inherit folly, but the prudent are crowned with knowledge.
In my beginning there was light.
Surely there was light at the beginning of time, but before we can get to the beginning of time, we will need to explore our own beginnings, which also means exploring the beginning of science. And that means returning to the ultimate motive for both science and religion: the longing for something else. Something beyond the universe of our experience.
For many people, that longing translates into something that gives meaning and purpose to the universe and extends to a longing for some hidden place that is better than the world in which we live, where sins are forgiven, pain is absent, and death does not exist. Others, however, long for a hidden place of a very different sort, the physical world beyond our senses, the world that helps us understand how things behave the way they do, rather than why. This hidden world underlies what we experience, and the understanding of it gives us the power to change our lives, our environment, and our future.
The contrast between these two worlds is reflected in two very different works of literature.
The first, The Lion, the Witch and the Wardrobe, by C. S. Lewis, is a twentieth-century children’s fantasy with decidedly religious overtones. It captures a childhood experience most of us have had—looking under the bed or in the closet or in the attic for hidden treasure or evidence that there is more out there than what we normally experience. In the book, several schoolchildren discover a strange new world, Narnia, by climbing into a large wardrobe in the country house outside London where they have been sequestered for their protection during the Second World War. The children help save Narnia with the aid of a lion, who lets himself be humiliated and sacrificed, Christlike, at an altar in order to conquer evil in his world.
While the religious allusion in Lewis’s story is clear, we can also interpret it in another way—as an allegory, not for the existence of God or the devil, but rather for the remarkable and potentially terrifying possibilities of the unknown, possibilities that lie just beyond the edge of our senses, just waiting for us to be brave enough to seek them out. Possibilities that, once revealed, may enrich our understanding of ourselves or, for some who feel a need, provide a sense of value and purpose.
The portal to a hidden world inside the wardrobe is at once safe, with the familiar smell of oft-worn clothes, and mysterious. It implies the need to move beyond classical notions of space and time. For if nothing is revealed to an observer who is in front of or behind the wardrobe, and something is revealed only to someone inside, then the space experienced inside the wardrobe must be far larger than that seen from its outside.
Such a concept is characteristic of a universe in which space and time can be dynamical, as in the General Theory of Relativity, where, for example, from outside the “event horizon” of a black hole—that radius inside of which there is no escape—a black hole might appear to comprise a small volume, but for an observer inside (who has not yet been crushed to smithereens by the gravitational forces present), the volume can look quite different. Indeed, it is possible, though beyond the domain where we can perform reliable calculations, that the space inside a black hole might provide a portal to another universe disconnected from our own.
But the central point I want to return to is that the possibility of universes beyond our perception seems to be tied, in the literary and philosophical imagination, at least, to the possibility that space itself is not what it seems.
The harbinger of this notion, the “ur” story if you will, was written twenty-three centuries before Lewis penned his fantasy. I refer to Plato’s Republic, and in particular to my favorite section, the Allegory of the Cave. But in spite of its early provenance, it illuminates more directly and more clearly both the potential necessity and the potential perils of searching for understanding beyond the reach of our immediate senses.
In the allegory, Plato likens our experience of reality to that of a group of individuals who live their entire lives imprisoned inside a cave, forced to face a blank wall. Their only view of the real world is that wall, which is illuminated by a fire behind them, and on which they see shadows moving. The shadows come from objects located behind them that the light of the fire projects on the wall.
I show the drawing below, which came from the high school text in which I first read this allegory, in a 1961 translation of Plato’s dialogues.
The drawing is amusing because it clearly reflects as much about the time it was drawn as it does the configuration of the cave described in the dialogue. Why, for example, are the prisoners here all women, and scantily clad ones at that? In Plato’s day, any sexual allusion might easily have displayed young boys.
Plato argues that the prisoners will view the shadows as reality and even give them names. This is not unreasonable, and it is, in one sense, as we shall soon see, a very modern view of what reality is, namely that which we can directly measure. My favorite definition of reality still is that given by the science fiction writer Philip K. Dick, who said, “Reality is that which, when you stop believing in it, doesn’t go away.” For the prisoners, the shadows are what they see. They are also likely to hear only the echoes of noises made behind them as the sounds bounce off the wall.
Plato likened a philosopher to a prisoner who is freed from bondage and forced, almost against his will, to not only look at the fire, but to move past it, and out to the daylight beyond. First, the poor soul will be in distress, with the glare of the fire and the sunshine beyond the cave hurting his eyes. Objects will appear completely unfamiliar; they will not resemble their shadows. Plato argues that the new freeman may still imagine the shadows that he is used to as truer representations than the objects themselves that are casting the shadows.
If the individual is reluctantly dragged out into the sunshine, ultimately all of these sensations of confusion and pain will be multiplied. But eventually, he will become accustomed to the real world, will see the stars and Moon and sky, and his soul and mind will be liberated of the illusions that had earlier governed his life.
If the person returns to the cave, Plato argues, two things would happen. First, because his eyes would no longer be accustomed to the darkness, he would be less able to distinguish the shadows and recognize them, and his compatriots would view him as handicapped at best, and dim at worst. Second, he would no longer view the petty and myopic priorities of his former society, or the honors given to those who might best recognize the shadows and predict their future, as worthy of his respect. As Plato poetically put it, quoting from Homer:
“Better to be the poor servant of a poor master, and to endure anything, rather than think as they do and live after their manner.”
So much for those whose lives are lived entirely in illusion, which Plato suggests includes most of humanity.
Then, the allegory states that the journey upward—into the light—is the ascent of the soul into the intellectual world.
Clearly in Plato’s mind only a retreat to the purely “intellectual world,” a journey reserved for the few—aka philosophers—could replace illusion with reality. Happily, that journey is far more accessible today using the techniques of science, which combine reason and reflection with empirical inquiry. Nevertheless, the same challenge remains for scientists today: to see what is behind the shadows, to see that which, when you drop your preconceptions, doesn’t disappear.
While Plato doesn’t explicitly mention it, not only would his fellow prisoners view the poor soul who had ventured out and returned as handicapped, but they would likely think he was crazy if he talked about the wonders that he had glimpsed: the Sun, the Moon, lakes, trees, and other people and their civilizations.
This idea is strikingly modern. As the frontiers of science have moved further and further away from the world of the familiar and the world of common sense as inferred from our direct experience, our picture of the reality underlying our experience is getting increasingly difficult for us to comprehend or accept. Some find it more comforting to retreat to myth and superstition for guidance.
But, we have every reason to expect that “common sense,” which first evolved to help us cope with predators in the savannas of Africa, might lead us astray when we attempt to think about nature on vastly different scales. We didn’t evolve to intuitively understand the world of the very small, the very big, or the very fast. We shouldn’t expect the rules we have come to rely on for our daily lives to be universal. While that myopia was useful from an evolutionary perspective, as thinking beings we can move beyond it.
In this regard, I cannot resist quoting one last admonition in Plato’s allegory:
“In the world of knowledge the idea of good appears last of all and is seen only with an effort; and, when seen, is also inferred to be the author of all things good and right, parent of light, and . . . the immediate source of reason and truth.”
Plato further argues that this is what those who would act rationally should strive for, in both public and private life—seeking the “good” by focusing on reason and truth. He suggests that we can only do so by exploring the realities that underlie the world of our direct experience, rather than by exploring the illusions of a reality that we might want to exist. Only through rational examination of what is real, and not by faith alone, is rational action—or good—possible.
Today, Plato’s vision of “pure thought” has been replaced by the scientific method, which, based on both reason and experiment, allows us to discover the underlying realities of the world. Rational action in public and private life now requires a basis in both reason and empirical investigation, and it often requires a departure from the solipsistic world of our direct experience. This principle is the source of most of my own public activism in opposition to government policies based on ideology rather than evidence, and it is also probably why I respond so negatively to the concept of the “sacred”—implying as it does some idea or admonition that is off-limits to public questioning, exploration, discussion, and sometimes ridicule.
It is hard to state this view more strongly than I did in a New Yorker piece: “Whenever scientific claims are presented as unquestionable, they undermine science. Similarly, when religious actions or claims about sanctity can be made with impunity in our society, we undermine the basis of modern secular democracy. We owe it to ourselves and to our children not to give a free pass to governments—totalitarian, theocratic, or democratic—that endorse, encourage, enforce, or otherwise legitimize the suppression of open questioning in order to protect ideas that are considered ‘sacred.’ Five hundred years of science have liberated humanity from the shackles of enforced ignorance.”
Philosophical reflections aside, the prime reason I am introducing Plato’s cave here is that it can provide a concrete example of the nature of the scientific discoveries at the heart of the story I want to tell.
Imagine a shadow that our prisoners might see on the wall, displayed by an evil puppeteer located on a ledge in front of the fire:
This shadow displays both length and directionality, two concepts that we, who are not confined to the cave, take for granted.
However, as the prisoners watch, this shadow changes:
Later it looks like this:
And again later like this:
And later still, like this:
What would the prisoners infer from all of this? Presumably, that concepts such as length or direction have no absolute meaning. The objects in their world can change both length and directionality arbitrarily. In the reality of their direct experience, neither length nor directionality appears to have significance.
What will the natural philosopher, who has escaped to the surface to explore the richer world beyond the shadows, discover? He will see that the shadow is first of all just a shadow: a two-dimensional image on the wall cast from a real, three-dimensional object located behind the prisoners. He will see that the object has a fixed length that never changes, and that it’s accompanied by an arrow that is always on the same side of the object. From a vantage point slightly above the object, he sees that the series of images results from the projection of a rotating weather vane onto the wall:
When he returns to join his former colleagues, the philosopher-scientist can explain that an absolute quantity called length doesn’t change over time, and that directionality can be assigned unambiguously to certain objects as well. He will tell his friends that the real world is three-dimensional, not two-dimensional, and that once they understand, all of their confusion about the seemingly arbitrary changes will disappear.
Would they believe him? It would be a tough sell because they won’t have an intuitive idea of what a rotation is (after all, with an intuition based purely on two-dimensional experience, it would likely be difficult to “picture” mentally any rotations in a third dimension). Blank stares? Probably. The loony bin? Maybe. However, he might win over the community by stressing attractive characteristics associated with his claim: behavior that on the surface appears to be complex and arbitrary can be shown to result from a much simpler underlying picture of nature, and seemingly disparate phenomena are actually connected and can be part of a unified whole.
Better still, he could make predictions that his friends could test. First, he could argue that, if the apparent change in length of the shadows measured by the group is really due to a rotation in a third dimension, whenever the length of the object briefly vanishes, it will immediately reemerge with the arrow pointing in the opposite direction. Second, he could argue that as the length oscillates, the maximum length of the shadow when the arrow is pointing in one direction will always be exactly the same as the maximum length of the shadow when it is pointing in the other direction.
Plato’s cave thus becomes an allegory for far more than he may have intended. Plato’s freed man discovers the hallmarks of the remarkable true story of our own struggle to understand nature on its most fundamental scales of space, time, and matter. We too have had to escape the shackles of our prior experience to uncover profound and beautiful simplifications and predictions that can be as terrifying as they are wonderful.
But just as the light beyond Plato’s cave is painful to the eyes at first, with time it becomes mesmerizing. And once witnessed, there is no going back.
- Publisher: Atria Books (February 27, 2018)
- Length: 336 pages
- ISBN13: 9781476777627
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Raves and Reviews
"The Greatest Story Ever Told—So Far ranges from Galileo to the LHC and beyond. It's accessible, illuminating, and surprising—an ideal guide for anyone interested in understanding our accidental universe."
– Elizabeth Kolbert, Pulitzer Prize-winning author of The Sixth Extinction
"As Bard of the Universe, physicist Lawrence Krauss may be uniquely qualified to give us the Greatest Story Ever Told — a masterful blend of history, modern physics, and cosmic perspective that empowers the reader to not only embrace our understanding of the universe, but also revel in what remains to be discovered."
– Neil deGrasse Tyson, American Museum of Natural History
“College students, hippies, squares, christians, muslims, democrats, republicans, libertarians, theists, even atheists—all of us—sit around BS-ing like: 'So, how did all this, I mean everything, all of us, the whole universe, you know, man, everything, how did this all get here?' While we were doing that, Lawrence Krauss and people like him were doing the work to figure it out. Then Krauss wrote this great book about it. 'Wow, man, you mean, like we’re getting closer to really knowing? I guess we’ll have to back to talking about politics and sex.'”
– Penn Jillette, author of Presto!
"In the span of a century, physics progressed from skepticism that atoms were real to equations so precise we can predict properties of subatomic particles to the tenth decimal place. Lawrence Krauss rightly places this achievement among the greatest of all stories, and his book—at once engaging, poetic and scholarly—tells the story with a scientist’s penetrating insight and a writer’s masterly craft."
– Brian Greene, author of The Elegant Universe, and Director, Center for Theoretical Physics, Columbia University
"Unlike some very clever scientists, Lawrence Krauss is not content to bask on the Mount Olympus of modern physics. A great educator as well as a great physicist, he wants to pull others up the rarefied heights to join him. But unlike some science educators, he doesn’t dumb down. In Einstein’s words, he makes it 'as simple as possible but no simpler.'"
– Richard Dawkins, author of The Magic of Reality
"A rich, definitely not-dumbed-down history of physics... An admirable complement to the author's previous book and equally satisfying for those willing to read carefully.”
“This truly is the greatest story: how the universe arose, what it’s made of, how it works. Krauss is a warm and authoritative guide to what future generations will surely say is one of our species’ greatest accomplishments.”
– Steven Pinker, Johnstone Professor of Psychology, Harvard University, and author of The Language Instinct and The Blank Slate
"Discovering the bedrock nature of physical reality ranks as one of humanity's greatest collective achievements. This book gives a fine account of the main ideas and how they emerged. Krauss is himself close to the field, and can offer insights into the personalities who have led the key advances. A practiced and skilled writer, he succeeds in making the physics 'as simple as possible but no simpler.' I don't know a better book on this subject."
– Martin Rees, author of Just Six Numbers
“In every debate I’ve done with theologians and religious believers their knock-out final argument always comes in the form of two questions: Why is there something rather than nothing? and Why are we here? The presumption is that if science provides no answers then there must be a God. But God or no, we still want answers. In A Universe From Nothing Lawrence Krauss, one of the biggest thinkers of our time, addressed the first question with verve, and in The Greatest Story Ever Told he tackles the second with elegance. Both volumes should be placed in hotel rooms across America, in the drawer next to the Gideon Bible."
– Michael Shermer, Publisher Skeptic magazine, columnist Scientific American, Presidential Fellow Chapman University, author The Moral Arc.
"It is an exhilarating experience to be led through this fascinating story, from Galileo to the Standard Model and the Higgs boson and beyond, with lucid detail and insight, illuminating vividly not only the achievements themselves but also the joy of creative thought and discovery, enriched with vignettes of the remarkable individuals who paved the way. It amply demonstrates that the discovery that 'nature really follows the simple and elegant rules intuited by the 20th- and 21st-century versions of Plato’s philosophers' is one of the most astonishing achievements of the human intellect."
– Noam Chomsky, Institute Professor & Professor of Linguistics (Emeritus), MIT
"History of science with an edge — humorous, personal, passionate, yet intellectually serious and authoritative."
– Frank Wilczek, Nobel Laureate, Physics
"A Homeric tale of science, history, and philosophy revealing how we learned so much about the universe and its tiniest parts."
– Sheldon Glashow, Nobel Laureate, 1979 in physics
"Charming... Krauss has written an account with sweep and verve that shows the full development of our ideas about the makeup of the world around us... A great romp."
– Walter Gilbert, Nobel Award, Chemistry, 1980
"In confident...prose, Krauss tells a story that both celebrates and explores science. Through it, he reminds readers why scientists build such complicated machinery and push the boundaries of the quantum world when nothing makes sense: “For no more practical reason than to celebrate and explore the beauty of nature.”"
– Publishers Weekly
Praise for A Universe From Nothing
"Lively and humorous as well as informative… As compelling as it is intriguing.”
– Publishers Weekly
“[An] excellent guide to cutting-edge physics… Detailed but lucid, thorough but not stodgy… Insightful… Space and time can indeed come from nothing; nothing, as Krauss explains beautifully... A great book: readable, informative and topical.”
– New Scientist
"Krauss possesses a rare talent for making the hardest ideas in astrophysics accessible to the layman, due in part to his sly humor... Krauss is genuinely in awe of the "wondrously strange" nature of our physical world, and his enthusiasm is infectious.”
– San Francisco Chronicle, Huffington Post, AP
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