Tag: Carl Sagan
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This isn’t Carl Sagan’s best book, but it was his last, and it has plenty of good stuff to say. … Chapter 5 is about “Four Cosmic Questions” 1st cosmic question: “Was there ever life on Mars?” 2nd cosmic question: “Is Titan a laboratory for the origins of life?” 3rd cosmic question: “Is there intelligent…
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“What an astonishing thing a book is. It’s a flat object made from a tree with flexible parts on which are imprinted lots of funny dark squiggles. But one glance at it and you’re inside the mind of another person, maybe somebody dead for thousands of years. Across the millennia, an author is speaking clearly…
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“David Goodstein, a physicist at Cal Tech, notes that science has been growing nearly exponentially for centuries and that it cannot continue such growth — because then everybody on the planet would have to be a scientist, and then the growth would have to stop.” – Carl Sagan, The Demon-Haunted World At first, this passage…
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“The idea that Mr. Spock could be a cross between a human being and a life-form independently evolved on the planet Vulcan is genetically far less probable than a successful cross of a man and an artichoke.” – Carl Sagan, The Demon-Haunted World Yeah we don’t like to think about that do we? Ironically, Star…
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“Why aren’t we using sports to teach science?” – Carl Sagan, The Demon-Haunted World Sagan was apparently a huge fan of basketball as a way to teach science and mathematics. In his book, The Demon-Haunted World, Sagan’s bit about using basketball to teach probability and logic is classic for him—he’s always looking for sneaky scaffolding.…
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“There are naive questions, tedious questions, ill-phrased questions, questions put after inadequate self-criticism. But every question is a cry to understand the world. There is no such thing as a dumb question.” – Carl Sagan, The Demon-Haunted World Are some questions “dumb”? Maybe in the moment—but even the worst-formed ones come from a mental framework…
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“We have a tendency today to think we occupy some exalted vantage point, and to pity the poor Newtonians for having so limited a world view. But within certain reasonable limitations, the same harmonic equations that describe clockwork really do describe the motions of astronomical objects throughout the Universe. This is a profound, not a…
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“The myths and folklore of many premodern cultures have explanatory or at least mnemonic value. In stories that everyone can appreciate and even witness, they encode the environment.” – Carl Sagan, “The Demon-Haunted World” Here, Sagan is engaging in a critique of modern intellectual habits by reflecting on the purpose of ancient myth. He’s saying…