Magic of Reality: How We Know What's Really True

4,03 valoración promedio
( 17.498 valoraciones por Goodreads )
 
9780593066126: Magic of Reality: How We Know What's Really True

What are things made of? What is the sun? Why is there night and day, winter and summer? Why do bad things happen? Are we alone? Throughout history people all over the world have invented stories to answer profound questions such as these. Have you heard the tale of how the sun hatched out of an emu's egg? Or what about the great catfish that carries the world on its back? Has anyone ever told you that earthquakes are caused by a sneezing giant? These fantastical myths are fun - but what is the real answer to such questions? The Magic of Reality, with its explanations of space, time, evolution and more, will inspire and amaze readers of all ages - young adults, adults, children, octogenarians. Teaming up with the renowned illustrator Dave McKean, Richard Dawkins answers all these questions and many more. In stunning words and pictures this book presents the real story of the world around us, taking us on an enthralling journey through scientific reality, and showing that it has an awe-inspiring beauty and thrilling magic which far exceed those of the ancient myths. We encounter rainbows, our genetic ancestors, tsunamis, shooting stars, plants, animals, and an intriguing cast of characters in this extraordinary scientific voyage of discovery. Richard Dawkins and Dave McKean have created a dazzling celebration of our planet that will entertain and inform for years to come.

"Sinopsis" puede pertenecer a otra edición de este libro.

About the Author:

Richard Dawkins is the former Charles Simonyi Professor of the Public Understanding of Science at Oxford University (1995-2008). His many bestsellers include The Selfish Gene and The God Delusion. Dave McKean has illustrated many award winning books and graphic novels, including Coraline by Neil Gaiman, and the Newberry and Carnegie Medal winning The Graveyard Book. He has created hundreds of album, comic and book covers, and has designed characters for two of the Harry Potter films. He has also directed two feature films, MirrorMask and Luna.

Excerpt. © Reprinted by permission. All rights reserved.:

1

WHAT IS REALITY?
WHAT IS MAGIC?


REALITY IS EVERYTHING that exists. That sounds straightforward, doesn’t it? Actually, it isn’t. There are various problems. What about dinosaurs, which once existed but exist no longer? What about stars, which are so far away that, by the time their light reaches us and we can see them, they may have fizzled out?

We’ll come to dinosaurs and stars in a moment. But in any case, how do we know things exist, even in the present? Well, our five senses – sight, smell, touch, hearing and taste – do a pretty good job of convincing us that many things are real: rocks and camels, newly mown grass and freshly ground coffee, sandpaper and velvet, waterfalls and doorbells, sugar and salt. But are we only going to call something ‘real’ if we can detect it directly with one of our five senses?

What about a distant galaxy, too far away to be seen with the naked eye? What about a bacterium, too small to be seen without a powerful microscope? Must we say that these do not exist because we can’t see them? No. Obviously we can enhance our senses through the use of special instruments: telescopes for the galaxy, microscopes for bacteria. Because we understand telescopes and microscopes, and how they work, we can use them to extend the reach of our senses – in this case, the sense of sight – and what they enable us to see convinces us that galaxies and bacteria exist.

How about radio waves? Do they exist? Our eyes can’t detect them, nor can our ears, but again special instruments – television sets, for example – convert them into signals that we can see and hear. So, although we can’t see or hear radio waves, we know they are a part of reality. As with telescopes and microscopes, we understand how radios and televisions work. So they help our senses to build a picture of what exists: the real world – reality. Radio telescopes (and X-ray telescopes) show us stars and galaxies through what seem like different eyes: another way to expand our view of reality.

Back to those dinosaurs. How do we know that they once roamed the Earth? We have never seen them or heard them or had to run away from them. Alas, we don’t have a time machine to show them to us directly. But here we have a different kind of aid to our senses: we have fossils, and we can see them with the naked eye. Fossils don’t run and jump but, because we understand how fossils are formed, they can tell us something of what happened millions of years ago. We understand how water, with minerals dissolved in it, seeps into corpses buried in layers of mud and rock. We understand how the minerals crystallize out of the water and replace the materials of the corpse, atom by atom, leaving some trace of the original animal’s form imprinted on the stone. So, although we can’t see dinosaurs directly with our senses, we can work out that they must have existed, using indirect evidence that still ultimately reaches us through our senses: we see and touch the stony traces of ancient life.

In a different sense, a telescope can work like a kind of time machine. What we see when we look at anything is actually light, and light takes time to travel. Even when you look at a friend’s face you are seeing them in the past, because the light from their face takes a tiny fraction of a second to travel to your eye. Sound travels much more slowly, which is why you see a firework burst in the sky noticeably earlier than you hear the bang. When you watch a man chopping down a tree in the distance, there is an odd delay in the sound of his axe hitting the tree.

Light travels so fast that we normally assume anything we see happens at the instant we see it. But stars are another matter. Even the sun is eight light-minutes away. If the sun blew up, this catastrophic event wouldn’t become a part of our reality until eight minutes later. And that would be the end of us! As for the next nearest star, Proxima Centauri, if you look at it in 2012, what you are seeing is happening in 2008. Galaxies are huge collections of stars. We are in one galaxy called the Milky Way. When you look at the Milky Way’s next-door neighbour, the Andromeda galaxy, your telescope is a time machine taking you back two and a half million years. There’s a cluster of five galaxies called Stephan’s Quintet, which we see through the Hubble telescope spectacularly colliding with each other. But we see them colliding 280 million years ago. If there are aliens in one of those colliding galaxies with a telescope powerful enough to see us, what they are seeing on Earth, at this very moment, here and now, is the early ancestors of the dinosaurs.

Are there really aliens in outer space? We’ve never seen or heard them. Are they a part of reality? Nobody knows; but we do know what kind of things could one day tell us if they are. If ever we got near to an alien, our sense organs could tell us about it. Perhaps somebody will one day invent a telescope powerful enough to detect life on other planets from here. Or perhaps our radio telescopes will pick up messages that could only have come from an alien intelligence. For reality doesn’t just consist of the things we already know about: it also includes things that exist but that we don’t know about yet and won’t know about until some future time, perhaps when we have built better instruments to assist our five senses.

Atoms have always existed, but it was only rather recently that we became sure of their existence, and it is likely that our descendants will know about many more things that, for now, we do not. That is the wonder and the joy of science: it goes on and on uncovering new things. This doesn’t mean we should believe just anything that anybody might dream up: there are a million things we can imagine but which are highly unlikely to be real – fairies and hobgoblins, leprechauns and hippogriffs. We should always be open-minded, but the only good reason to believe that something exists is if there is real evidence that it does.

Models: testing our imagination

There is a less familiar way in which a scientist can work out what is real when our five senses cannot detect it directly. This is through the use of a ‘model’ of what might be going on, which can then be tested. We imagine – you might say we guess – what might be there. That is called the model. We then work out (often by doing a mathematical calculation) what we ought to see, or hear, etc. (often with the help of measuring instruments) if the model were true. We then check whether that is what we actually do see. The model might literally be a replica made out of wood or plastic, or it might be a piece of mathematics on paper, or it might be a simulation in a computer. We look carefully at the model and predict what we ought to see or hear, etc. if the model were correct. Then we look to see whether the predictions are right or wrong. If they are right, this increases our confidence that the model really does represent reality; we then go on to devise further experiments, perhaps refining the model, to test the findings further and confirm them. If our predictions are wrong, we reject the model, or modify it and try again.

Here’s an example. Nowadays, we know that genes – the units of heredity – are made of stuff called DNA. We know a great deal about DNA and how it works. But you can’t see the details of what DNA looks like, even with a powerful microscope. Almost everything we know about DNA comes indirectly from dreaming up models and then testing them.

Actually, long before anyone had even heard of DNA, scientists already knew lots about genes from testing the predictions of models. Back in the nineteenth century, an Austrian monk called Gregor Mendel did experiments in his monastery garden, breeding peas in large quantities. He counted the numbers of plants that had flowers of various colours, or that had peas that were wrinkly or smooth, as the generations went by. Mendel never saw or touched a gene. All he saw were peas and flowers, and he could use his eyes to count different types. He invented a model, which involved what we would now call genes (though Mendel didn’t call them that), and he calculated that, if his model were correct, in a particular breeding experiment there ought to be three times as many smooth peas as wrinkly ones. And that is what he found when he counted them. Leaving aside the details, the point is that Mendel’s ‘genes’ were an invention of his imagination: he couldn’t see them with his eyes, not even with a microscope. But he could see smooth and wrinkled peas, and by counting them he found indirect evidence that his model of heredity was a good representation of something in the real world. Later scientists used a modification of Mendel’s method, working with other living things such as fruit flies instead of peas, to show that genes are strung out in a definite order, along threads called chromosomes (we humans have forty-six chromosomes, fruit flies have eight). It was even possible to work out, by testing models, the exact order in which genes were arranged along chromosomes. All this was done long before we knew that genes were made of DNA.

Nowadays we know this, and we know exactly how DNA works, thanks to James Watson and Francis Crick, plus a lot of other scientists who came after them. Watson and Crick could not see DNA with their own eyes. Once again, they made their discoveries by imagining models and testing them. In their case, they literally built metal and cardboard models of what DNA might look like, and they calculated what certain measurements ought to be if those models were correct. The predictions of one model, the so-called double helix model, exactly fitted the measurements made by Rosalind Franklin and Maurice Wilkins, using special instruments involving X-rays beamed into crystals of purified DNA. Watson and Crick also immediately realized that their model of the structure of DNA would produce exactly the kind of results seen by Gregor Mendel in his monastery garden.

We come to know what is real, then, in one of three ways. We can detect it directly, using our five senses; or indirectly, using our senses aided by special instruments such as telescopes and microscopes; or even more indirectly, by creating models of what might be real and then testing those models to see whether they successfully predict things that we can see (or hear, etc.), with or without the aid of instruments. Ultimately, it always comes back to our senses, one way or another.

Does this mean that reality only contains things that can be detected, directly or indirectly, by our senses and by the methods of science? What about things like jealousy and joy, happiness and love? Are these not also real?

Yes, they are real. But they depend for their existence on brains: human brains, certainly, and probably the brains of other advanced animal species, such as chimpanzees, dogs and whales, too. Rocks don’t feel joy or jealousy, and mountains do not love. These emotions are intensely real to those who experience them, but they didn’t exist before brains did. It is possible that emotions like these – and perhaps other emotions that we can’t begin to dream of – could exist on other planets, but only if those planets also contain brains – or something equivalent to brains: for who knows what weird thinking organs or feeling machines may lurk elsewhere in the universe?

Science and the supernatural: explanation and its enemy

So that is reality, and that is how we can know whether something is real or not. Each chapter of this book is going to be about one particular aspect of reality – the sun, for instance, or earthquakes, or rainbows, or the many different kinds of animals. I want now to turn to the other key word of my title: magic. Magic is a slippery word: it is commonly used in three different ways, and the first thing I must do is distinguish between them. I’ll call the first one ‘supernatural magic’, the second one ‘stage magic’ and the third one (which is my favourite meaning, and the one I intend in my title) ‘poetic magic’.

Supernatural magic is the kind of magic we find in myths and fairy tales. (In ‘miracles’, too, though I shall leave those to one side for now and return to them in the final chapter.) It’s the magic of Aladdin’s lamp, of wizards’ spells, of the Brothers Grimm, of Hans Christian Andersen and of J. K. Rowling. It’s the fictional magic of a witch casting a spell and turning a prince into a frog, or a fairy godmother changing a pumpkin into a gleaming coach. These are the stories we all remember with fondness from our childhood, and many of us still enjoy when served up in a traditional Christmas pantomime – but we all know this kind of magic is just fiction and does not happen in reality.

Stage magic, by contrast, really does happen, and it can be great fun. Or at least, something really happens, though it isn’t what the audience thinks it is. A man on a stage (it usually is a man, for some reason) deceives us into thinking that something astonishing has happened (it may even seem supernatural) when what really happened was something quite different. Silk handkerchiefs cannot turn into rabbits, any more than frogs can turn into princes. What we have seen on the stage is only a trick. Our eyes have deceived us – or rather, the conjuror has gone to great pains to deceive our eyes, perhaps by cleverly using words to distract us from what he is really doing with his hands.

Some conjurors are honest and go out of their way to make sure their audiences know that they have simply performed a trick. I am thinking of people like James ‘The Amazing’ Randi, or Penn and Teller, or Derren Brown. Even though these admirable performers don’t usually tell the audience exactly how they did the trick – they could be thrown out of the Magic Circle (the conjurors’ club) if they did that – they do make sure the audience knows that there was no supernatural magic involved. Others don’t actively spell out that it was just a trick, but they don’t make exaggerated claims about what they have done either – they just leave the audience with the rather enjoyable sensation that something mysterious has happened, without actively lying about it. But unfortunately there are some conjurors who are deliberately dishonest, and who pretend they really do have ‘supernatural’ or ‘paranormal’ powers: perhaps they claim that they really can bend metal or stop clocks by the power of thought alone. Some of these dishonest fakes (‘charlatans’ is a good word for them) earn large fees from mining or oil companies by claiming that they can tell, using ‘psychic powers’, where would be a good place to drill. Other charlatans exploit people who are grieving, by claiming to be able to make contact with the dead. When this happens it is no longer just fun or entertainment, but preying on people’s gullibility and distress. To be fair, it may be that not all of these people are charlatans. Some of them may sincerely believe they are talking to the dead.

The third meaning of magic is the one I mean in my title: poetic magic. We are moved to tears by a beautiful piece of music and we describe the performance as ‘magical’. We gaze up at the stars on a dark night with no moon and no city lights and, breathless with joy, we say the sight is ‘pure magic’. We might use the same word to describe a gorgeous sunset, or an alpine landscape, or a rainbow against a dark sky. In this sense, ‘magical’ simply means deeply moving, exhilarating: something that gives us goose bumps, something that makes us feel more fully alive. What I hope to show you in this book is that reality – the facts of the real wo...

"Sobre este título" puede pertenecer a otra edición de este libro.

Comprar nuevo Ver libro

Gastos de envío: EUR 12,27
De Irlanda a Estados Unidos de America

Destinos, gastos y plazos de envío

Añadir al carrito

Los mejores resultados en AbeBooks

1.

Richard Dawkins
Editorial: Bantam Press (2011)
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Tapa dura Primera edición Cantidad: 1
Librería
The Squirrel Book Shop
(Dublin, Irlanda)
Valoración
[?]

Descripción Bantam Press, 2011. Hardcover. Estado de conservación: New. Estado de la sobrecubierta: Fine. Dave McKean Ilustrador. 1st Edition. Slight shelf wear might be noticed. The Magic of Reality, with its explanations of space, time, evolution and more, will inspire and amaze readers of all ages – young adults, adults, children, octogenarians. book. Nº de ref. de la librería TSB263

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 12,00
Convertir moneda

Añadir al carrito

Gastos de envío: EUR 12,27
De Irlanda a Estados Unidos de America
Destinos, gastos y plazos de envío

2.

Richard Dawkins
Editorial: Bantam Press (2011)
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Tapa dura Cantidad: 1
Librería
Valoración
[?]

Descripción Bantam Press, 2011. Estado de conservación: New. Nº de ref. de la librería A001L9780593066126

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 22,14
Convertir moneda

Añadir al carrito

Gastos de envío: EUR 2,99
De Alemania a Estados Unidos de America
Destinos, gastos y plazos de envío

3.

Richard Dawkins
Editorial: Bantam Press 2011-09-15 (2011)
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Cantidad: 5
Librería
Chiron Media
(Wallingford, Reino Unido)
Valoración
[?]

Descripción Bantam Press 2011-09-15, 2011. Estado de conservación: New. Brand new book, sourced directly from publisher. Dispatch time is 24-48 hours from our warehouse. Book will be sent in robust, secure packaging to ensure it reaches you securely. Nº de ref. de la librería NU-GRD-04766930

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 22,92
Convertir moneda

Añadir al carrito

Gastos de envío: EUR 3,36
De Reino Unido a Estados Unidos de America
Destinos, gastos y plazos de envío

4.

Dawkins, Richard
Editorial: Bantam Press (2011)
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Tapa dura Cantidad: 5
Librería
Valoración
[?]

Descripción Bantam Press, 2011. Estado de conservación: New. 2011. 0th Edition. Hardcover. What are things made of? What is the sun? Why is there night and day, winter and summer? Why do bad things happen? Are we alone? Have you heard the tale of how the sun hatched out of an emu's egg? Has anyone ever told you that earthquakes are caused by a sneezing giant? This title answers all these questions. Illustrator(s): McKean, Dave. Num Pages: 272 pages, Illustrated throughout with 4 colour integrated artwork. BIC Classification: PDZ; WN. Category: (G) General (US: Trade). Dimension: 254 x 199 x 26. Weight in Grams: 1052. . . . . . . Nº de ref. de la librería V9780593066126

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 26,90
Convertir moneda

Añadir al carrito

Gastos de envío: GRATIS
De Irlanda a Estados Unidos de America
Destinos, gastos y plazos de envío

5.

Dawkins, Richard
Editorial: Bantam Press
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Tapa dura Cantidad: 5
Librería
Kennys Bookstore
(Olney, MD, Estados Unidos de America)
Valoración
[?]

Descripción Bantam Press. Estado de conservación: New. 2011. 0th Edition. Hardcover. What are things made of? What is the sun? Why is there night and day, winter and summer? Why do bad things happen? Are we alone? Have you heard the tale of how the sun hatched out of an emu's egg? Has anyone ever told you that earthquakes are caused by a sneezing giant? This title answers all these questions. Illustrator(s): McKean, Dave. Num Pages: 272 pages, Illustrated throughout with 4 colour integrated artwork. BIC Classification: PDZ; WN. Category: (G) General (US: Trade). Dimension: 254 x 199 x 26. Weight in Grams: 1052. . . . . . Books ship from the US and Ireland. Nº de ref. de la librería V9780593066126

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 28,50
Convertir moneda

Añadir al carrito

Gastos de envío: GRATIS
A Estados Unidos de America
Destinos, gastos y plazos de envío

6.

Dawkins, Richard
Editorial: Transworld (2011)
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Cantidad: > 20
Librería
Books2Anywhere
(Fairford, GLOS, Reino Unido)
Valoración
[?]

Descripción Transworld, 2011. HRD. Estado de conservación: New. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Nº de ref. de la librería F4-9780593066126

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 19,00
Convertir moneda

Añadir al carrito

Gastos de envío: EUR 10,11
De Reino Unido a Estados Unidos de America
Destinos, gastos y plazos de envío

7.

Richard Dawkins
Editorial: Transworld Publishers Ltd, United Kingdom (2011)
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Tapa dura Cantidad: 10
Librería
The Book Depository US
(London, Reino Unido)
Valoración
[?]

Descripción Transworld Publishers Ltd, United Kingdom, 2011. Hardback. Estado de conservación: New. Dave McKean Ilustrador. Language: English . Brand New Book. What are things made of? What is the sun? Why is there night and day, winter and summer? Why do bad things happen? Are we alone? Throughout history people all over the world have invented stories to answer profound questions such as these. Have you heard the tale of how the sun hatched out of an emu s egg? Or what about the great catfish that carries the world on its back? Has anyone ever told you that earthquakes are caused by a sneezing giant? These fantastical myths are fun - but what is the real answer to such questions? The Magic of Reality, with its explanations of space, time, evolution and more, will inspire and amaze readers of all ages - young adults, adults, children, octogenarians. Teaming up with the renowned illustrator Dave McKean, Richard Dawkins answers all these questions and many more. In stunning words and pictures this book presents the real story of the world around us, taking us on an enthralling journey through scientific reality, and showing that it has an awe-inspiring beauty and thrilling magic which far exceed those of the ancient myths. We encounter rainbows, our genetic ancestors, tsunamis, shooting stars, plants, animals, and an intriguing cast of characters in this extraordinary scientific voyage of discovery. Richard Dawkins and Dave McKean have created a dazzling celebration of our planet that will entertain and inform for years to come. Nº de ref. de la librería AAZ9780593066126

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 30,49
Convertir moneda

Añadir al carrito

Gastos de envío: GRATIS
De Reino Unido a Estados Unidos de America
Destinos, gastos y plazos de envío

8.

Richard Dawkins
Editorial: Bantam Press
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Tapa dura Cantidad: 8
Librería
THE SAINT BOOKSTORE
(Southport, Reino Unido)
Valoración
[?]

Descripción Bantam Press. Hardcover. Estado de conservación: New. New copy - Usually dispatched within 2 working days. Nº de ref. de la librería B9780593066126

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 22,64
Convertir moneda

Añadir al carrito

Gastos de envío: EUR 7,79
De Reino Unido a Estados Unidos de America
Destinos, gastos y plazos de envío

9.

Richard Dawkins
Editorial: Transworld Publishers Ltd, United Kingdom (2011)
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Tapa dura Cantidad: 10
Librería
The Book Depository
(London, Reino Unido)
Valoración
[?]

Descripción Transworld Publishers Ltd, United Kingdom, 2011. Hardback. Estado de conservación: New. Dave McKean Ilustrador. Language: English . Brand New Book. What are things made of? What is the sun? Why is there night and day, winter and summer? Why do bad things happen? Are we alone? Throughout history people all over the world have invented stories to answer profound questions such as these. Have you heard the tale of how the sun hatched out of an emu s egg? Or what about the great catfish that carries the world on its back? Has anyone ever told you that earthquakes are caused by a sneezing giant? These fantastical myths are fun - but what is the real answer to such questions? The Magic of Reality, with its explanations of space, time, evolution and more, will inspire and amaze readers of all ages - young adults, adults, children, octogenarians. Teaming up with the renowned illustrator Dave McKean, Richard Dawkins answers all these questions and many more. In stunning words and pictures this book presents the real story of the world around us, taking us on an enthralling journey through scientific reality, and showing that it has an awe-inspiring beauty and thrilling magic which far exceed those of the ancient myths. We encounter rainbows, our genetic ancestors, tsunamis, shooting stars, plants, animals, and an intriguing cast of characters in this extraordinary scientific voyage of discovery. Richard Dawkins and Dave McKean have created a dazzling celebration of our planet that will entertain and inform for years to come. Nº de ref. de la librería AAZ9780593066126

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 30,44
Convertir moneda

Añadir al carrito

Gastos de envío: GRATIS
De Reino Unido a Estados Unidos de America
Destinos, gastos y plazos de envío

10.

Richard Dawkins (author), Dave McKean (illustrator)
Editorial: Transworld 2011-09-01, London (2011)
ISBN 10: 059306612X ISBN 13: 9780593066126
Nuevos Tapa dura Cantidad: 5
Librería
Blackwell's
(Oxford, OX, Reino Unido)
Valoración
[?]

Descripción Transworld 2011-09-01, London, 2011. hardback. Estado de conservación: New. Nº de ref. de la librería 9780593066126

Más información sobre esta librería | Hacer una pregunta a la librería

Comprar nuevo
EUR 25,10
Convertir moneda

Añadir al carrito

Gastos de envío: EUR 6,74
De Reino Unido a Estados Unidos de America
Destinos, gastos y plazos de envío

Existen otras copia(s) de este libro

Ver todos los resultados de su búsqueda