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435 lines
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File Name: BEYOND.001
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Life Beyond Earth & The Mind of Man
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Edited by Richard Berendzen
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A symposium held at Boston University on November 20, 1972
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(C) 1973 NASA Scientific and Technical Information Office * Washington DC
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NASA SP-328
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Stock Number 033-000-00518-1
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Catalog Number NAS 1.21:328
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Library of Congress Catalog No. 73-600150
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[Note: The following are selected excerpts from the above publication]
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BERENDZEN
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Welcome to the symposium on "Life Beyond Earth and the Mind of Man." Our
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topic will be the search for life in the universe and the ramifications of
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its possible discovery. Although there have been a handful of scientific
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meetings on this topic, to the best of my knowledge this it the first time
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there has ever been a meeting where a distinquished panel from diverse fields
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will discuss the topic in an open forum.
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A generation ago almost all scientists would have argued, often "ex
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cathedra," that there probably is no other life in the universe beside what
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we know here on Earth. But as Martin Rees, the cosmologist, has succinctly
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put it, "absence of evidence is not evidence of absence." Beyond that, in
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the last decade or so the evidence, albeit circumstantial, has become large
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indeed, so large, in fact, that today many scientists, probably the majority,
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are convinced that extraterrestrial life surely must exist and possibly in
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enormous abdundance. The question now is no longer so much of IF as of
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WHERE, and with regard to the search, it has also become WHEN, for ultimate
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contact seems to many serious thinkers to be virtually inevitable. A short
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passage from the recent report of the Astronomy Survey Committee of the
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august National Academy of Sciences of the United States, the Nation's most
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disnguished scientific body, gives an example of the modern scientific
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attitude:
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"Each passing year has seen our estimates of the probability of life
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in space increase, along with our capabilities for detecting it. More
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and more scientists feel that contact with other civilizations is no
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longer something beyond our dreams but a natural event in the history
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of mankind that will perhaps occur within the lifetime of many of us.
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The promise is now too great, either to turn away from it or to wait
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much longer before devoting major resources to a search for other
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intelligent beings... In the long run this may be one of science's most
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important and most profound contributions to mankind and to our
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civilizatioin."
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I believe it fair to say, therefore, that this momentous topic deserves
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careful, thorough discussion, and that is what I hope we shall give it today.
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ADDITIONAL MEMBERS OF THE PANEL
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ASHLEY MONTAGU: renowned anthropologist and social biologist For many years
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he was chariman of the Department of Anthropology at Rutgers He is the author
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of scores of books and research papers on a variety of topics in the social
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sciences, including the social and cultural development of mankind
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KRISTER STENDAHL: an outstanding churchman and theologican, who is the Dean
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of Harvard School of Divinity. Dr. Stendahl is considered to be one of the
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Nation's most scholarly theologians.
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CARL SAGAN: astronomer and exobiologist at Cornell University, and one of the
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five or six leading researchers on this question of extraterrestrial life. He
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is the coauthor with the Soviet astonomer I.S. Shklovskii of the book
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Intelligent Life in the Universe.
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PHILIP MORRISON: a professor of physics at MIT durring this time, 13
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years prior to this symposium coauthored what was perhpas the first
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scientifically valid and reasoned paper ever published on possible modes of
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communications with etraterrestrial life. Dr. Morrison is considered in
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scholarly circles as one of the most broadly knowledgeable scientists in the
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Nation.
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GEORGE WALD: a professor of biology at Harvard. In 1967 he received the
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Nobel Prize. Dr. Walk has published extensively in all branches of biology,
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including the biological and chemical evolution of terrestiral life.
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-------
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WALD
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The chance of breaking out of the solar system and establishing physical
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contact - or the chance of any creature in outer space establishing physical
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contact with us, coming to us from some other solar system -- seems to me so
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remote as to be almost nil. In order to do that, one would have to travel at
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the speed of light and it is rather hard to travel at the speed of light and
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not be light. SO I rather doubt that physical contact is possible.
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But we now are discuuing another kind of contact, and that is communication.
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May I say, so that we can have a somewhat warmer and2 livelier conversation as
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this meeting goes on, that I can conceive of no nightmare as terrifying as
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establishing such communication with a so-called superior (or if you wish,
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advanced) technology in outer space. You see, I see no escape from the
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thought that more advanced technologies exist, very likely in a number of
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places within our own galaxy. That though in itself is a little terrifying to
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me, I muyst say, because of my view of and identification with the human
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enterprise.
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You see, when I ask myself as a lifelong sicentist, "What's science about?"
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the answer is not to increase the catalog of facts, it is to achieve
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understanding. It means a great deal that one of the greatest human
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enterprises is understnaind. It is something that men have sweated out, to
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the greater dignity and worth of man. The thought that we might attach, as by
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an umbilical cord, to some more advanced civilization, with its more advanced
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science and technology, in outer space does not thrill me, but just the
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opposite. You see, I think it might thrill and fill with elation the people
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who did it; but that is true of almost any enterprise one could name, however
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horrifying, however destructive to the rest of mankind. You cannot think of
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anything so horrifying that some person would not have a feeling of personal
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accomplishment at carrying it out; and I would say that the rest of us had
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better restrain him.
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MONTAGU
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These two facts render it likely, to judge from our immediate past
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performance [*note: 10,000 years of humanity as opposed to longer
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civilization maintenance by an extraterretestrial society], that upon
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encountering them, our Government will immediately convene a committee in
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order to determine whether these creatures consitute a threat to democracy.
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Since their physical appearance will be markedly different and since
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difference is usually equated in our culture with inferiority, no matter what
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the intellectual status of these creatures may be, and regardless of the
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healthy ways of life that characterize them, we shall, of course, know
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exactly where we belong in the nature of things.
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In short, we would have rather a problem on out hands, but we would not want,
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I suppose, the American way of life to be contaminated. With the record we
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have of treatment of the American Indians, the blacks, the Chicanos, and
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other minority groups, and our record in such places as Mexico, the
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Philippines, China, Vietname, and wherever else we have attempted to make the
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world safe for democracy, you can foresee what is likely to happen.
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I hope you will understand that the assignment I was given was worded in the
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form, "How might human beings react to the discovery of life beyond Earth?"
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and I have interpreted the word "might" to mean "how may we probably react"
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and "how should we react." We are coming to the "should."
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I do not think we should wait until the encounter occurs; we should do all in
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our power to prepare ourselves for it. The manner in which we first meet may
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determine the character of all our subsequent relations. Let us never forget
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the fatal impact we have had upon innumerable peoples on this Earth --
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peoples of our own species who trusted us, befriended us, and whom we
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destroyed by our thoughlessness and insensitivity to their needs and
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vulnerabilities.
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The simple truth is that before we can communicate with others succesfully,
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we must first learn to communicate with ourselves succesfully, and we are a
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long way from having achieved that. Perhaps that is where we ought to begin
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-- with ourselves. Learning to communicate with ourselves, with all the
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different peoples and nations of the Earth. We go on behaving as if we
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believe there is very little wrong, if anything, with ourselve. We refuse to
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face the fact that we have already virtually desstroyed ourselves as humane
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beings, and if we recognize any destruction at all, it is that of our
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environement. We must recognize that we are suffering from a sickeness even
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though it has been repeatedly denied; nevertheless it is, from my point of
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view as a student of human nature, a fact that most people are no longer
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humane beings, but sick persons - a sickness induced by the worship of false
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values which have corrupted the spirit of man and made him the most dangerous
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creature on this Earth. Unless he cures himself of this sickness, can one
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reasonably expect such a creature to behave in a healthy manner? What one
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can expect him to do is to behave destructively, and a good deal of the time
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to be unaware of the fact that he is doing so.
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Hence, to the question, "How might human beings react to the discovery of
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life beyond Earth?" I would answer: "Don't wait until that life is
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discovered, but prepare yourselves for the discovery by becoming what you
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ought to be, by realizing your evolutionary destiny, which is to live as to
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live and love were one." And what is love? It is the ability to confer
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survival benefits in a creatively enlarging manner upon the other. And what
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is health? It is the ability to love, to work, and to play. If we will
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begin on such a a program of rehabilitation, we may be able to respond to
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the discovery of life beyon Earth in an enhancing manner.
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We have landed on the Moon. It might not be such a bad idea if we tried
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landing on Earth. When asked by a European inquirer what he thought of
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Western civilization, Gandhi paused awhile, and wrly smiling, replied, "I
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don't think it would be such a bad idea."
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QUESTIONS FROM THE FLOOR
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QUESTION:
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Communications between ourselves and other civilizations can be considered
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in general in two basic categories. One is a sort of passive communication
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in which we receive information from other beings; we must sit there and
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compile it and perhaps eventually sort it out. And the other is an active
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communication, in which we ourselves can try sending signals. And as far as
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the active part is concerned, the first step outght to be to construct some
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sort of signal that would be identifiable as to the fact that we were
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intelligent beings. But beyond that, as Carl Sagan said, these people are a
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lot more intelligent than we are. The next step would be to send out one
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piece of information that would characterize our society. Since they are
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probably more intelligent or advanced than we, deep consideration should be
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given to just precisely what piece of information should be sent out,
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because the wrong characterization of our society, or the wrong
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interpretartion of it, could be quite damaging in the long run.
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SAGAN:
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I do not think it is quite as urgent to send as to receive, which may be a
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paraphrase of a Biblical passage. Also, I again would want to stress that,
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willy-nilly, we have been sending, so your remarks are most properly directed
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to the FCC. The image of our society, which is garnered at some place 30
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light years out, is the image you get by turning on the lat-night tube. So if
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you are worried about sending out the wrong message, you have every reason to
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be worried.
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BERENDZEN:
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Let me mention something that I would hate to pass without adequate
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discussion. Is it possible that if we detected a signal from space, it would
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have the dramatic, beneficial effect on mankind to bringing us together?
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SAGAN:
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Well, I alluded to that before. I think chances of that happening are very
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great, because as soon as it is clear that there is somebody else out there
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and they are smarter than us and they are different from us, then the
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differences between the various slight subsets of mankind which people are
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spending a lot of time worrying about -- those differences I think tend to...
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MONTAGU:
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Look, we have had someone out there for an awfully long time, whom Dr.
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Stendahl calls "God." I take it he is referring to the Christian God. As an
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antrhoplogist I am aquainted with several hundred gods. And this God is
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supposed to be all wise and all-loving, etc. We seem to have learned very
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little from Him. Why should our communication with extraterrestrial beings
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have a more cohesive effect that the concepts of the Catholic CHurch, for
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example?
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SAGAN:
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It is a good question. There are many possible long answers, but maybe the
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fastest answer I can give is that there may be some room for doubt about the
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reality of the several hundred gods you were talking about, but once the
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message is received, I think there will be very little room for doubt about
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the reality of the message.
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MONTAGU:
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But I do not doubt the existence of any of these hundreds of Gods! I believe
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anything you believe to be real is as real as it could possibly be, even
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though it's unreal.
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SAGAN:
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That's why you have such an exemplary moral character!
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--------
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QUESTION:
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I would like to direct a question to Carl Sagan. Professor Wald has raised
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the issue of the control of technology. Now the conference that took place in
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Soviet Armenia was a mutual conference between two great powers. Professor
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Morrison has raised the possibility that a tremendous corpus of knowledge can
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come wafting down from outer space. Suppose that this comes into an American
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facility in Puerto Rico, technology that would enable us to dominate this
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world. Suppose it comes into a Soviet facility in Armenia. What exactly would
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be the international body that would monitor these signals from outer space,
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assuming that this civilization that we would be communicatin with is more
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advanced and would be giving us tremendous technological knowledge? What is
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to guarantee that one of the existing nation-states does not monitor it and
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use it as we have used our technology in the past?
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SAGAN:
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Very good question. Fortunately, I think it has a quick answer. The answer
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has to do with time scale and beamwidth. As Phil Morrison stressed, and he
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*must* be right, the time scale to learn a new technology from such a message
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must be long - decades perhaps. No ine is going to say, "Put tab A into slot
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B." You want to think a little before you do that. You do not say, "Oh, yess,
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sir; right in." You want to understand what is happening first. So things
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will move slowly if there is a new technology involved. That is the first
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part of the answer.
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The second part is that the Earth is tiny compared to the size of the beam.
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Therefore, all of the Earth -- not just Armenia and Puerto Rico -- but also
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the Netherlands and Australia and Ghana and all the other countries are going
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to be able to pick up the same message. Therefore it makes no sense at all
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for one nation to classify the message. It is like classifying the Sun. It
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makes no sense., YOu can do it if you want, but it does not help.
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--------
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QUESTION:
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The assumption is that these messages are now passing through othe solar
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system. We have to assume that we are just not receiving them now. If you
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know that if you are the first country to discover this body of knoweldge,
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you'll have a major advantage, then might not...
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SAGAN:
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The you have to imagine a scenario in which there is a large, secret radio
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telescope that is working for a century on a given problem and word never
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leaks out. I myself find that difficult to believe, esp[ecially since the
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total number of radio astronomers in the world is extremely small, and all of
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them know each other. Also, I believe that the community of scientists on
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this issue is such that it is impossible for such a discovery to be made
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without it being known on an international scale.
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WALD:
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Once again, all the nations will be listening in equally, provided they have
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equally big radio telescopes. So we will have a radio-telescope race, and God
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help the nation that has a somewhat smaller radio telescoper that the others.
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As for the community of world science, this is the firt time I have heard
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that it covers weapons technology.
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SAGAN:
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We are not talking about weapons technology.
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WALD:
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But this can be converted into weapons technology.
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SAGAN:
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Sure, but it starts out by saying, "A,B,C,D...." Do you say, "Let's classify
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the alphabet and maybe the next thing that comes in will be how to build a
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better weapon"? I just cannot see it.
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WALD:
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But that is the way nuclear energy appeared. One did not know what to do with
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it or how to handle it, so a few nations with the technical facilities and
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the wealth got themselves atom bombs.
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---------
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QUESTION:
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The assumptian has been up to now that any message received will be via some
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electromagnetic wavelength. It would seem to me that this is a very naive
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assumption to make in view of the fact that the senders, as has been stated
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repeatedly, will be far more intelligent that us, and may have access to
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means of which we are completely unware.
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BERENDZEN:
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Excellent point. Phil, you have given much though to this. Would you
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respond?
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MORRISON:
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If the thousand-megacycle bands of radio are not the best ones, even though
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they are easily accessible, then there is no question about it, we will find
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nothing from this search. The only trouble with that kind of argument is that
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it could be put forward at any time, no matter what technology is presently
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available. You can always say there is something we do not know that 10 years
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from now will be much better understood. Therefore I think if you say this,
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your inaction is guaranteed; then you surely will never make the search.
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And it can be the other way around. When it turns out after sober thought
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that you find yourself easily able to listen by some means that looks
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plausible, that will in fact carry the message, then try it. I believe there
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is a society of these groups, not just one. There are probably very many. If
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there were only one, we would likely have no hope of finding it. But there
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are probably thousands, maybe as many as million. They probably have already
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had much experience at finding new civilizations and bringing them into the
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network. If so, they will understand that they should not start with the most
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advanced device; if you want to make friends with some new group smewher, you
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do not set up color TV stations. You might wave a flag or beat a drum. You
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know you have access to those channels.
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SAGAN:
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I would look at it like this. Suppose that we were a tribe in some isolated
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valley in, say, New Guinea, where we communicate with our neighbors over in
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the next valley by runner and by drum. And we are asked to imagine an
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advanced civilization thousands of miles away. How would they communicate? I
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would say, "Oh, probably by very fast runners or enormous drums that beat
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very loud." In fact, there is a vast international radio and cable traffic
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going around such people, and over them, and through them, and they would not
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know about it. But that radio and cable traffic is not intended to talk to
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the inhabitants of that isolated valley. It is intended for coversation
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between technologically more sophisticated beings. If we wanted to talk to
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them, then we would need to use the technology of the local civilization.
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And I would imagine that if an advanced civilization wanted to talk to us,
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they would say, "Those guys must be extremely backward. Let's go to some
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ancient museum and pull out ... what do you call it?... one of those radio
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telescops, and beam it at them." But meanwhile they would use for their own
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purposes whatever it is they use -- gravity wavers, or neutrinos, or
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tachyons, or whatever is the fast, high-informational channel.
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---------
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QUESTION:
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Do you think it is more likely that the message we will intercept will be
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going back and forth between two members of a soceity or will it be an
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exploratory one, aimed just as us?
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MORRISON:
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If we get the message at all, it is not likely to be just a chance beam that
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crosses us -- that is very unlikely.
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---------
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QUESTION:
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But it will have a wide beamwidth, as was pointed out.
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MORRISON:
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If it is a wide beam, then the beam would be include probably just exactly
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these search channels we are talking about. If it is not that, it will be
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very hard to find a message that has not been designed to be easy to read. If
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it is just high-speed chatter on some frequency we cannot use, I do not know
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if we are ever going to find it.
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SAGAN:
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Wide beam compared to the size of the Earth but narrow beam compared to how
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many stars you are going to pick up.
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---------
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<<EOF>>
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