On the Origin of Time

In On the Origin of Time, Thomas Hertog provides a fascinating insight into the latest ideas in cosmology, which he explored with one of the most important scientists of our time, Stephen Hawking. Hertog reveals how Hawking's views on the universe and the laws of physics evolved during his lifetime, moving from traditional ideas of immutable laws to the revolutionary idea that these laws were formed along with the universe in a quantum environment after the Big Bang. The book also explores concepts such as the holographic universe and cosmology from the top down, offering new insights into the origins of time and the fundamental principles that govern our universe. "On the Origin of Time" is a journey into the depths of physics and philosophy that challenges readers to rethink their understanding of the universe and humanity's place in it.

In the 1980s, Stephen Hawking held that the physical laws that govern our universe are immutable and eternal. This view was widely accepted among scientists and was consistent with classical theories of physics, which were considered fixed and immutable. However, Hawking later changed his mind when he began to explore quantum physics and its implications for the evolution of the universe. Quantum physics revolutionized our understanding of the universe by showing that things exist in terms of probabilities, not exact values. Electrons orbiting the nucleus of an atom never have an exact location or mass, but only the probability of being in a certain place and weighing a certain amount. This concept of probability is the basis of quantum physics and shows that there is some uncertainty at the smallest level. The evolution of the laws of physics after the big bang is another key aspect of Hawking's theory. Laws such as gravity and electromagnetism were formed during the first seconds after the big bang, when the universe was rapidly expanding and cooling. These laws evolved in the quantum realm, where uncertainty and probability were dominant. This evolution of the laws of physics can be compared to the evolution of living organisms according to Charles Darwin's theory, where species adapt to their environment and change over time. The formation of the universe some 13.8 billion years ago provides a context for understanding the evolution of the laws of physics. During the first moments after the Big Bang, the universe evolved very dynamically, and the laws that govern it were shaped by an infinite number of possibilities. For example, neutrons weigh only 0.1% more than protons. If the masses were reversed, all neutrons would have decayed moments after the big bang, which would mean that there would be no atoms, and therefore no planets, stars or people. The significance of this theory for contemporary physics is enormous. Rethinking theories and hypotheses about the stability of the laws of physics opens up new possibilities for research in quantum physics and cosmology. If the laws of physics are dynamical and evolve with the universe, this may have profound implications for our understanding of the universe and how it works. This new view of the universe can lead to breakthrough discoveries and a deeper understanding of the fundamental principles that govern our universe.

Stephen Hawking argued that the universe is beautifully designed to support life. This idea is based on the observation that the laws of physics and the parameters of the universe are perfectly aligned to allow life to emerge and evolve. Hawking asked the question: Why is our universe so conducive to life? This question leads to speculation about the fine-tuning of the universe, meaning that even small changes in the fundamental physical constants could lead to an entirely different universe that would be incapable of supporting life. One example of fine-tuning is gravity. If gravity were just a little stronger, stars would shine brighter because the nuclear reactions in their cores would be more intense. But that would mean that stars would run out of fuel much more quickly, and life on planets wouldn't have a chance to develop because their suns would dry up and die. Conversely, if gravity were weaker, stars might not ignite at all, which would also make it impossible for life to form. Temperature variations after the big bang are another example of fine-tuning. In the early universe, regions of space varied slightly in temperature. These variations were only fractions of a degree, but if they had been even slightly larger, all galaxies would have grown into giant black holes, plunging everything that ever was and ever will be into eternal darkness. Conversely, if these temperature variations were smaller, no galaxies would form at all, which would mean that there would be no stars, no planets, and no life. This idea leads to philosophical and religious considerations. One traditional explanation is the belief in a creative designer, i.e., a God or gods who determine the rules of the game that govern the universe. Something as perfect, complex, and delicately balanced as our universe had to be designed with life in mind. This view, however, faces criticism in terms of falsifiability. The belief in a creative designer is not a scientific theory because there is no way to experimentally verify or disprove it. A second, more recent explanation of fine-tuning is the multiverse theory. This theory claims that our universe is one of an infinite number of universes that exist side by side in parallel. Each of these universes may have completely different laws of physics, and most of them would be barren and completely incapable of sustaining life. However, if there are infinitely many of them, every once in a while you will come across a universe that is just so: so-so. However, this theory also faces criticism in terms of falsifiability. How could we test whether other universes exist when we can't even see our own universe in its entirety? Stephen Hawking was dissatisfied with both of these explanations and realized that we needed a new theory to code our universe. This new theory should not be falsifiable and provide a deeper understanding of the fine-tuning of the universe and its ability to support life.

The holographic universe theory is a revolutionary concept that is changing our understanding of the universe and its structure. According to this theory, the universe is a projection from higher dimensions that are inaccessible to us. This concept can be likened to the holograms we see, for example, in the science fiction film Star Wars, where characters from distant planets communicate through three-dimensional projections from two-dimensional surfaces. Similarly, holographic theory holds that our three-dimensional universe is a projection from a two-dimensional surface in other dimensions. One of the key pieces of evidence for the holographic theory comes from the study of black holes. Black holes are regions of space where gravity is so strong that even light cannot escape. At the centre of a black hole is a singularity, an infinitely dense and infinitesimally small point. The singularity is surrounded by a spherical titanium gravitational field. When scientists examined the information stored in black holes, they found that the amount of information is not equal to the capacity of a sphere, but to the capacity of a circle, which is a sphere in two dimensions. This discovery provides evidence for the holographic universe theory that our everyday dimensions are projections from a two-dimensional surface. This concept has important implications for understanding the universe as an information system. Hawking and Hertog took this idea and used it to understand the origins of the universe. According to them, the no-boundary proposal, which states that the dimension of time was created moments after the big bang from three spatial dimensions, fits perfectly with the theory that our universe is a hologram containing higher dimensions. The equations accounting for the holographic model allow scientists to explore the origins of the universe. They have found that the closer we get to the Big Bang, the less information we have. This finding suggests that the universe is made up of bits of information, and the closer we get to the beginning of the universe, the more bits we begin to miss, much like the resolution of a movie gradually grains until there is nothing left. Thus, before the universe and before time, there was a singularity from which our universe was projected. The implications of holographic theory for cosmology are enormous. It opens up new avenues of research and modelling of the universe, which can lead to breakthrough discoveries and a deeper understanding of the fundamental principles that govern our universe. This new view of the universe as an information system is changing our understanding of the laws of physics and their evolution. Holographic theory provides a framework that allows scientists to explore the universe at entirely new levels and discover new aspects of its structure and functioning.

Top-down cosmology represents a new approach to the study of the universe that differs from traditional bottom-up methods. Traditional cosmology traces the evolution of the universe from the Big Bang forward, with scientists using scientific theories and evidence to predict what we should see. Top-down cosmology, on the other hand, examines the universe from the present back in time, allowing a new perspective on time, causes, and effects. Quantum physics plays a key role in top-down cosmology, especially in the context of observing and fixing values and probabilities. In quantum physics, nothing has a specific value, only the probability that it will have a specific value. When something is measured or observed, it has a definite value. This concept of superposition, where something can exist in two places at once, is the basis of top-down cosmology. According to this theory, scientists' measurements fix the laws of physics from a set of infinite possibilities. The act of observation in quantum physics fixes specific values, which means that present observations can affect the past of the universe. This view suggests that human observers have a large role in shaping the universe's past, which changes our traditional understanding of time and causality. Top-down cosmology differs from traditional methods by examining how present observations influence the past. In traditional cosmology, scientists start at the Big Bang and move on, using scientific theories and evidence to predict what we should see. Top-down cosmology, however, stands what we know about time, cause and effect on its head, and explores the universe from the present back in time. The implications and importance of top-down cosmology for cosmology are enormous. This new approach has the potential to revolutionize the study of the universe and opens new perspectives on understanding time, cause and effect. Top-down cosmology provides a new framework for research that allows scientists to explore the universe at entirely new levels and discover new aspects of its structure and functioning.

Albert Einstein revolutionized our understanding of time by proving it mathematically as a fourth dimension in addition to our three spatial dimensions. Imagine an object that exists not only in a particular place but also at a particular point in time. This concept is fundamental to our understanding of the universe and has enormous significance for the existence of objects in certain places and at certain times. The no-boundaries proposal, put forward by Stephen Hawking in 1983, argues that time did not exist before the Big Bang. Everything existed as an infinitesimally small, infinitely dense blob in eternity. According to this proposal, there is no point in asking what existed before the big bang because time did not exist. However, a fraction of a second after the Big Bang, our three dimensions of space appeared, and from these three dimensions, time popped out as a fourth. The evolution of time dimensions is another key aspect of this theory. Time is a dynamic dimension that evolved along with the universe during the first seconds after the Big Bang. The relationship between time and space is fundamental to our understanding of the universe and how it works. This dynamic view of time changes our traditional understanding of the laws of physics and their evolution. Hawking's shift from a fixed view of the laws of physics to a dynamic one is a key moment in his career. He originally believed that the laws underlying our universe were fixed and eternal. Later, however, he began to change his mind and believed that these laws evolved with the universe in those crucial moments after the Big Bang. This shift can be compared to the biological evolution of species according to Charles Darwin, where species adapt to their environment and change over time. The implications of this theory for cosmology and physics are enormous. A new understanding of time and its role in the universe opens up new avenues for research and may lead to breakthrough discoveries. This new view of time and its relation to spatial dimensions is changing our understanding of the universe and how it works. New theories and hypotheses in cosmology and quantum physics can lead to a deeper understanding of the fundamental principles that govern our universe and open up new avenues for research and discovery.

In his book "On the Origin of Time", Thomas Hertog presents groundbreaking ideas that emerged from his collaboration with Stephen Hawking. The book explores the evolution of the laws of physics since the Big Bang and how these laws have been shaped in the quantum realm. Hawking revisited his original views on the immutability of physical laws and proposed that they evolved with the universe, a concept similar to the evolution of living organisms. The book further discusses the fine-tuning of the universe that makes life possible, and offers insights into traditional and modern explanations for this phenomenon, including the belief in a creative designer and the multiverse theory. Hertog and Hawking, however, criticize these explanations for their falsifiability. The holographic theory of the universe is another key point of the book, which argues that our universe is a projection from higher dimensions. This concept has profound implications for our understanding of the universe as an information system. The equations considering the holographic model allow new insights into the origins of the universe and suggest that the universe is composed of bits of information. Top-down cosmology represents a new approach to the study of the universe that explores the universe from the present back in time, changing our traditional understanding of cause and effect. This approach, based on quantum physics, suggests that human observers have a large role to play in shaping the universe's past. Hawking and Hertog's new view of time as a dynamic dimension that emerged after the Big Bang changes our understanding of the universe and its laws. These revolutionary ideas open up new avenues for research and may lead to breakthroughs in cosmology and quantum physics. Do you have feedback for us? We'd love it if you let us know your opinion on our content! Just send an email to feedback@rewio.app with the title of this book in the subject line and share your impressions!