The Magic of Reality

Richard Dawkins, an evolutionary biologist and bestselling author of The Selfish Gene and The God Delusion, presents a thematically organized science education book, illustrated by Dave McKean, in which each chapter poses a question about the natural world, surveys myths that ancient and modern cultures have invented to answer it, and then explains what science has actually discovered. The book's central argument is that scientific reality possesses a "poetic magic," a deep sense of wonder and beauty, that surpasses any supernatural tale.

Dawkins begins by defining reality as everything that exists and establishing three ways of knowing what is real: direct sensory detection, indirect detection using instruments like telescopes and microscopes, and scientific model-building with empirical testing. He illustrates the model method through the history of genetics, from Gregor Mendel, a nineteenth-century Austrian monk who predicted ratios of inherited traits in peas, through James Watson and Francis Crick, who discovered the double-helix structure of DNA using physical models checked against X-ray data gathered by Rosalind Franklin and Maurice Wilkins. He distinguishes three meanings of "magic": supernatural magic (fairy-tale spells and religious miracles), which he argues does not occur; stage magic (conjuring tricks involving deception); and poetic magic, the deep awe inspired by understanding the real world, which is the meaning he intends in his title. Supernatural explanations, he argues, are the enemy of understanding because they amount to declaring that something can never be explained.

The second chapter asks who the first person was. After surveying origin myths from Tasmanian aboriginal, Hebrew, and Norse traditions, Dawkins asserts that there never was a first person. Every individual belonged to the same species as its parents, and change accumulated so gradually that no single generation marked a boundary. He illustrates this with a thought experiment: Stacking 185 million ancestral portraits would stretch about 40 miles, with a modern human at one end and a fish at the other, yet each portrait would look essentially identical to its neighbors. He explains how fossils form, how radioactive isotopes allow scientists to date ancient rocks, and how DNA comparisons confirm universal common ancestry. Using the gene FoxP2, he shows that chimpanzees differ from humans by only nine out of 2,076 DNA letters, while mice differ by 139.

The third chapter addresses why there are so many kinds of animals. Dawkins draws an analogy between the evolution of species and the evolution of languages: Just as Latin diverged into Spanish, French, and Italian as separated populations drifted apart, species diverge when geographic barriers prevent gene flow. He uses the Galapagos Islands as a case study, explaining how iguanas colonized the volcanic islands and evolved into distinct species. He introduces the gene pool, the total collection of genes shuffled through sexual reproduction in a population, and explains that evolution means change in a gene pool over generations, driven by natural selection.

Chapter four asks what things are made of, tracing the concept of the atom from the ancient Greek philosopher Democritus, who coined the term a-tomos ("uncuttable"), through modern chemistry. Dawkins explains elements, compounds, molecules, and the three phases of matter in terms of molecular behavior. He describes the internal structure of atoms using the Rutherford-Bohr model and emphasizes the astonishing emptiness of matter. The chapter closes with carbon's special role as the scaffolding of life, its atoms linking into chains and rings that enable the molecular complexity of living organisms.

Chapter five explains night, day, and the seasons. Dawkins explains that the daily cycle results from Earth spinning on its axis, uses Newton's cannon thought experiment to illustrate how orbits work, and identifies the true cause of seasons: not Earth's varying distance from the sun but the 23.5-degree tilt of Earth's axis, which determines how directly and for how long sunlight strikes a given area.

Chapter six asks what the sun is. Dawkins explains that the sun is an ordinary star whose enormous mass triggers nuclear fusion at its core, converting hydrogen into helium. He describes stellar life cycles: Mainstream stars burn for billions of years before expanding into red giants and fading into white dwarfs, while massive stars end in supernova explosions that forge heavy elements and scatter them into space, the origin of the phrase "We are stardust" (131). He explains how all life on Earth is ultimately powered by sunlight captured by plants and passed along food chains, with even fossil fuels representing ancient stored solar energy.

Chapter seven asks what a rainbow is. Dawkins recounts the flood myth from the Sumerian Epic of Gilgamesh, noting that the Hebrew story of Noah's Ark is a retelling of this older tale. He explains Isaac Newton's discovery that white light is a mixture of colors separated by a prism, and describes how raindrops act as tiny prisms, each sending one color to a given observer's eye while millions collectively produce the full spectrum. He introduces the electromagnetic spectrum, noting that visible light is a tiny band within a vast range extending from radio waves to gamma rays.

Chapter eight asks when and how everything began. Dawkins explains the big bang model, now generally accepted, which holds that the universe originated from a single point between 13 and 14 billion years ago. He introduces the spectroscope as a tool for analyzing starlight and explains the Hubble red shift: The spectral patterns of distant galaxies are shifted toward the red end of the spectrum, analogous to the Doppler effect in sound, revealing that all galaxies are rushing apart and the universe is expanding.

Chapter nine asks whether we are alone. Dawkins examines modern alien myths, including abduction claims that psychologist Susan Clancy attributes to sleep paralysis, a condition in which the body remains temporarily paralyzed upon waking, often accompanied by vivid hallucinations. He discusses the scientific search for extraterrestrial life, noting the billions of potentially habitable planets and speculating that alien life forms would likely evolve eyes, given how useful vision is.

Chapter ten explains earthquakes through plate tectonics: Earth's crust consists of interlocking plates riding on a semi-molten layer, pushed apart by new crust welling up along mid-ocean ridges and driven by convection currents. Earthquakes result when plates grind past each other, collide, or subduct, with one plate sliding beneath another.

Chapter eleven asks why bad things happen, dismantling the notion of cosmic justice. Dawkins argues that the non-living world is genuinely indifferent, while the living world differs: Natural selection has shaped predators and parasites to work against their victims' interests. He describes the immune system, explains allergies and auto-immune diseases as costs of immune vigilance, and discusses cancer as the body's own cells escaping normal controls.

The final chapter asks what a miracle is. Dawkins introduces David Hume's eighteenth-century argument: One should accept a miracle story only if the falsehood of the testimony would be more improbable than the miracle itself. He applies this reasoning to the Cottingley Fairies photographs, the 1917 Fatima event, and biblical miracle stories, concluding that natural explanations are always more plausible. He closes by restating his central thesis: Science possesses its own magic, the magic of reality, which is more wonderful than any myth precisely because it is real and because we can understand how it works.