Human [NOOK Book]

Overview

What happened along the evolutionary trail that made humans so unique? In his accessible style, Michael Gazzaniga pinpoints the change that made us thinking, sentient humans different from our predecessors. He explores what makes human brains special, the importance of language and art in defining the human condition, the nature of human consciousness, and even artificial intelligence.

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Human

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Overview

What happened along the evolutionary trail that made humans so unique? In his accessible style, Michael Gazzaniga pinpoints the change that made us thinking, sentient humans different from our predecessors. He explores what makes human brains special, the importance of language and art in defining the human condition, the nature of human consciousness, and even artificial intelligence.

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Product Details

  • ISBN-13: 9780061829710
  • Publisher: HarperCollins Publishers
  • Publication date: 10/13/2009
  • Sold by: HARPERCOLLINS
  • Format: eBook
  • Pages: 464
  • Sales rank: 944,864
  • File size: 582 KB

Meet the Author

Michael S. Gazzaniga is internationally recognized in the field of neuroscience and a pio-neer in cognitive research. He is the director of the SAGE Center for the Study of the Mind at the University of California, Santa Barbara, and the author of many popular science books, including Who's in Charge? Free Will and the Science of the Brain; Nature's Mind: The Biological Roots of Thinking, Emotions, Sexuality, Language, and Intelligence; and Mind Matters: How the Mind and Brain Interact to Create Our Conscious Lives. He is a prominent adviser to various institutes involved in brain research, a fellow of the American Association for the Advancement of Science, and a past president of the American Psychological Society. He is featured regularly on public television and his research has been presented on NBC Nightly News and the Today show. Gazzaniga lives in Vermont and California with his wife and six children.

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Read an Excerpt

Human

Prologue

I always smile when I hear Garrison Keillor say, "Be well, do good work, and keep in touch." It is such a simple sentiment, yet so full of human complexity. Other apes don't have that sentiment. Think about it. Our species does like to wish people well, not harm. No one ever says, "Have a bad day" or "Do bad work," and keeping in touch is what the cell-phone industry has discovered all of us do, even when there is nothing going on.

There in one sentence Keillor captures humanness. A familiar cartoon with various captions makes its way around evolutionary biologists' circles. It shows an ape at one end of a line and then several intermediate early humans culminating in a tall human standing erect at the other end. We now know that the line isn't so direct, but the metaphor still works. We did evolve, and we are what we are through the forces of natural selection. And yet I would like to amend that cartoon. I see the human turning around with a knife in his hand and cutting his imaginary tether to the earlier versions, becoming liberated to do things no other animal comes close to doing.

We humans are special. All of us solve problems effortlessly and routinely. When we approach a screen door with our arms full of bags of groceries, we instantly know how to stick out our pinky and hook it around the door handle to open it. The human mind is so generative and so given to animation that we do things such as map agency (that is, we project intent) onto almost anything——our pets, our old shoes, our cars, our world, our gods. It is as if we don't want to be alone up here at the top of the cognitive chain as thesmartest things on earth. We want to see our dogs charm us and appeal to our emotions; we imagine that they too can have pity, love, hate, and all the rest. We are a big deal and we are a little scared about it.

Thousands of scientists and philosophers over hundreds of years have either recognized this uniqueness of ours or have denied it and looked for the antecedents of everything human in other animals. In recent years, clever scientists have found antecedents to all kinds of things that we had assumed were purely human constructions. We used to think that only humans had the ability to reflect on their own thoughts, which is called metacognition. Well, think again. Two psychologists at the University of Georgia have shown that rats also have this ability. It turns out that rats know what they don't know. Does that mean we should do away with our rat traps? I don't think so.

Everywhere I look I see tidbits of differences, and one can always say a particular tidbit can be found in others aspects of biological life. Ralph Greenspan, a very talented neuroscientist and geneticist at the Neuroscience Institute in La Jolla, California, studies, of all things, sleep in the fruit fly.

Someone had asked him at lunch one day, "Do flies sleep?" He quipped, "I don't know and I don't care." But then he got to thinking about it and realized that maybe he could learn something about the mysterious process of sleep, which has eluded understanding. The short version of this story is that flies do sleep, just as we do. More important, flies express the same genes during sleeping and waking hours that we do. Indeed, Greenspan's current research suggests that even protozoans sleep. Good grief!

The point is that most human activity can be related to antecedents in other animals. But to be swept away by such a fact is to miss the point of human experience. In the following chapters, we will comb through data about our brains, our minds, our social world, our feelings, our artistic endeavors, our capacity to confer agency, our consciousness, and our growing knowledge that our brain parts can be replaced with silicon parts. From this jaunt, one clear fact emerges. Although we are made up of the same chemicals, with the same physiological reactions, we are very different from other animals. Just as gases can become liquids, which can become solids, phase shifts occur in evolution, shifts so large in their implications that it becomes almost impossible to think of them as having the same components. A foggy mist is made up of the same stuff as an iceberg. In a complex relationship with the environment, very similar substances with the same chemical structure can become quite different in their reality and form.

Indeed, I have decided that something like a phase shift has occurred in becoming human. There simply is no one thing that will ever account for our spectacular abilities, our aspirations, and our capacity to travel mentally in time to the almost infinite world beyond our present existence. Even though we have all of these connections with the biologic world from which we came, and we have in some instances similar mental structures, we are hugely different. While most of our genes and brain architecture are held in common with animals, there are always differences to be found. And while we can use lathes to mill fine jewelry, and chimpanzees can use stones to crack open nuts, the differences are light-years apart. And while the family dog may appear empathetic, no pet understands the difference between sorrow and pity.

A phase shift occurred, and it occurred as the consequence of many things changing in our brains and minds. This book is the story of our uniqueness and how we got here. Personally, I love our species, and always have. I have never found it necessary to lessen our success and domination of this universe. So let us start the journey of understanding why humans are special, and let's have some fun doing it.

Human. Copyright © by Michael S. Gazzaniga. Reprinted by permission of HarperCollins Publishers, Inc. All rights reserved. Available now wherever books are sold.
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Customer Reviews

Average Rating 4.5
( 9 )
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Sort by: Showing 1 – 12 of 9 Customer Reviews
  • Anonymous

    Posted February 13, 2013

    Remington

    "Alrught, not being nice tu ya anymore." She walked away.

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  • Anonymous

    Posted February 14, 2013

    Kyle

    Walks out and blows up his house then drives away..

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  • Anonymous

    Posted July 27, 2012

    New town rp

    Nook town all results

    0 out of 1 people found this review helpful.

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  • Anonymous

    Posted July 28, 2012

    Kristi

    *falls asleep*

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  • Anonymous

    Posted July 26, 2012

    Lexy

    Can i leave now

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    Posted July 27, 2012

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  • Anonymous

    Posted February 16, 2013

    Church

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  • Anonymous

    Posted July 26, 2012

    Kati gtg be bck on sunday

    Bye b bck sunda

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  • Anonymous

    Posted November 25, 2008

    not for everyone

    I read the review of this book in the NY Times, was fascinated by it, and ordered it. Perhaps I shouldn't have ordered it. I don't know whether I'll ever get through it. A rather sophisticated knowledge of genes, DNA, etc, seems to be important if one is to enjoy reading it.

    0 out of 1 people found this review helpful.

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  • Anonymous

    Posted January 23, 2010

    No text was provided for this review.

  • Anonymous

    Posted January 2, 2010

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  • Anonymous

    Posted January 16, 2010

    No text was provided for this review.

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