Within Reason: Rationality and Human Behavior - Hardcover

Calne, Donald B.

Hardcover

ISBN 10: 0375403515 ISBN 13: 9780375403514

Verlag: Pantheon Books, 1999

Inhaltsangabe

Recent breakthroughs in neuroscience have revolutionized our understanding of the human mind and human cognition. But what implications do these new findings have for the place of reason--long considered the crowning human faculty that ensured transcendent purpose--in human life? This is the profoundly important question Donald Calne, a leading neurologist and clinician, addresses in Within Reason.

His conclusions are startling, disturbing, and of immense potential usefulness. Offering both a general explanation of the way the mind works and a compelling humanistic defense of the value of science and rationality, Calne shows that reason has no direct links to the brain's pathways of pleasure and satisfaction that motivate our behavior. Reason is simply a powerful tool put into the service of goals it cannot determine or change. Within Reason brilliantly and succinctly delineates how reason--through its deployment in all domains of human endeavor, from science to religion, from ethics, commerce, and government to art and music--has enabled mankind to achieve dominance over all other forms of life without providing any specifiable content, beyond survival, to the meaning of existence.  Echoing the great religious and philosophical traditions but written from the perspective of neuroscience, Within Reason offers a new and fascinating picture of the role of rationality in both evolution and daily consciousness.

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Über die Autorin bzw. den Autor

Donald B. Calne is director of the Neurodegenerative Disorders Centre at Vancouver Hospital and professor of neurology at the University of British Columbia. He lives in Vancouver.

Aus dem Klappentext

throughs in neuroscience have revolutionized our understanding of the human mind and human cognition. But what implications do these new findings have for the place of reason--long considered the crowning human faculty that ensured transcendent purpose--in human life? This is the profoundly important question Donald Calne, a leading neurologist and clinician, addresses in Within Reason. <br><br>His conclusions are startling, disturbing, and of immense potential usefulness. Offering both a general explanation of the way the mind works and a compelling humanistic defense of the value of science and rationality, Calne shows that reason has no direct links to the brain's pathways of pleasure and satisfaction that motivate our behavior. Reason is simply a powerful tool put into the service of goals it cannot determine or change. Within Reason brilliantly and succinctly delineates how reason--through its deployment in all domains of human endeavor, from science to religion, from ethics, commerce, and

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Introduction

When I was young, I was taught that education was important because without it we would be doomed to stupid behavior and opinions based upon prejudice. Educated people, I was told, were able to make wise decisions and to distinguish between right and wrong because they had the power of reason available to them. I grew up during the Second World War, and one of my most vivid childhood memories was a kaleidoscope of movie images shown in British schools in 1946, depicting the Nazi death camps. I was puzzled, for I had been led to believe that these atrocities were the irrational work of barbarians whose evil stemmed from ignorance. Yet I was also taught that Germany was distinguished by a history of outstanding reason, expressed in philosophy, music, poetry, science, and technology. If what I had been told about wisdom coming from education was true, how was it possible that Germany, the home of Bach, Beethoven, Brahms, Goethe, Leibniz, and Kant, could become a nation driven by hatred and complicit in the worst crimes against humanity that the world had ever seen? The conflict remained with me and gradually matured into a series of questions. Does reason direct what we do? If we think more, do we behave better? In short, could the nightmare of the Second World War have been avoided if the leaders of National Socialism had acquired, in some miraculous way, a sudden capacity for more reason?

Sadly, the facts do not support this. The intellectuals of Germany were among the first to embrace National Socialism. Wagner and Nietzsche blazed the trail in the nineteenth century, and by 1933 large numbers of university faculty were ready to champion National Socialist ideology. Other representatives of the educated classes, the lawyers and the physicians, and even more practical leaders, the industrialists, joined the throng. Many Europeans outside Germany looked on with approval. In some respects Hitler was expressing a widespread and influential sentiment that permeated the thinking of European intellectuals. The National Socialist movement was not conceived by ignorant people; its roots lay in the intelligentsia. It is difficult to escape the conclusion that if the leaders of National Socialism had achieved a dramatic increase in their capacity for reasoning in 1939, their regime would simply have pursued its policies with a more intelligent war machine; the goals would not have changed. National aggrandizement, territorial expansion, and institutionalized racism would have continued with more efficient weapons. The management of the "final solution of the Jewish question" was entirely dependent upon the ability to harness a product of reason -- modern technology -- to the problem of mass transportation, the safe manufacture and containment of Zyklon B, and the engineering of incinerators that could be fueled by the continuous ignition of melting human tissues.

Yet there was a paradox: vital resources were committed to the "final solution" though this diversion of manpower and material weakened the war effort. The German armies were in full retreat on all fronts. How can one make sense of this subversion of effort? The assembly of historical facts seems to amount to a grotesque concoction of reason with unreason. These events of my childhood kindled a deep personal curiosity about why people do things. The curiosity stayed with me, and as the war receded, my questions took a more general form. Have people all over the world been so irrational throughout history, and if so, why? I was assuming a natural tendency for us to be rational, but where is the evidence for this? I rephrased the questions into a more approachable form: What do we know about reason and the way we use it?

To pursue my curiosity, I began to look for information. Where possible, I have taken the position of a neurologist, because I happen to be a neurologist, but also because neurology gives a close-up view of some of nature's harshest but most illuminating experiments -- injuries that damage different parts of the brain. Strokes, tumors, and trauma may isolate and destroy one particular mental capacity, leaving everything else intact. Nature's disasters can thus help to explain how the brain works and shed some light on the instrument that stands at the center of the intellect: human reason.

I have taken to heart Francis Bacon's dictum that "truth emerges more readily from error than from confusion". Where evidence is indefinite, I have tried to find the most probable position, recognizing that it may ultimately prove to be wrong. My exploration has led me to a conclusion that was somewhat unexpected. Reason is a biological product -- a tool whose power is inherently and substantially restricted. It has improved how we do things; it has not changed why we do things. Reason has generated knowledge enabling us to fly around the world in less than two days. Yet we still travel for the same purposes that drove our ancient ancestors -- commerce, conquest, religion, romance, curiosity, or escape from overcrowding, poverty, and persecution.

To deny that reason has a role in setting our goals seems, at first, rather odd. A personal decision to go on a diet or take more exercise appears to be based upon reason. The same might be said for a government decision to raise taxes or sign a trade treaty. But reason is only contributing to the "how" portion of these decisions; the more fundamental "why" element, for all of these examples, is driven by instinctive self-preservation, emotional needs, and cultural attitudes. We are usually reluctant to admit the extent to which these forces govern our behavior, and accordingly we often recruit reason to explain and justify our actions. The transparency of our efforts is revealed by the term we have coined for covering up this irrational behavior: rationalization.


The rest of this chapter outlines some of the hopes for reason and some of the disappointments. In chapter 2 I develop a working definition of "reason." I deliberately avoid concentrating on any one aspect of reasoning, such as the psychological process of making decisions. If I pursued a narrow area in depth, I would thwart my attempt to view the whole picture of reason's place in human life, so in subsequent chapters I have included a wide range of topics, taking each "to only one decimal place" to keep the totality of rational behavior in perspective.

Since reason and language are so closely linked, I devote chapter 3 to delving into linguistics and the evidence that under exceptional circumstances neurological disease can separate reason from language. In chapter 4 I trace the development of social organization, for there is now a body of evidence suggesting that intelligence evolved from the need for individuals to cooperate in order to survive. In chapters 5 through 11, I follow the role of reason in the creation and maintenance of our most hallowed institutions: morality, commerce, government, religion, art, and science. In the remaining chapters I look at how reason operates in the human brain and mind.

Reason, like instinct and emotion, has evolved to facilitate the attainment of biological goals. Curiously, we have often found it easy to use reason in a harmful way. Chekhov's prophetic words, written a century ago, have a contemporary ring: "Man has been endowed with reason, with the power to create, so that he can add to what he's been given. But up to now he hasn't been a creator, only a destroyer. Forests keep disappearing, rivers dry up, wild life's become extinct, the climate's ruined, and the land grows poorer and uglier every day."

We proclaim that the disastrous events of the two world wars will not be repeated, but the same forces that led to those tragedies persist today, barely beneath the...

Details zur Ausgabe

• Verlag: Pantheon Books
• Erscheinungsdatum: 1999
• Sprache: Englisch
• ISBN 10: 0375403515
• ISBN 13: 9780375403514
• Einband: Gebundene Ausgabe
• Auflage: 1
• Anzahl der Seiten: 332
• Kontakt zum Hersteller: PANTHEON; https://www.penguinrandomhouse.com/series/PGN/pantheon-graphic-library/; ; Attn: Andrea T Sheridan 1745 BROADWAY, 14-1; NEW YORK; NY; 10019; USA
• Verantwortliche Person: Nicht verfügbar