{
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  "text": "Absence of evidence is not evidence of absence.",
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    "name": "Carl Sagan",
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    "title": "Dragons of Eden",
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      "slug": "there-is-a-popular",
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      "text": "There is a popular contention that half or more of the brain is unused. From an evolutionary point of view this would be quite extraordinary: why should it have evolved if it had no function? But actually the statement is made on very little evidence.",
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      "slug": "note-that-in-all",
      "url": "https://www.leafyquotes.com/carl-sagan/dragons-of-eden/note-that-in-all",
      "text": "Note that in all this interaction between mutation and natural selection, no moth is making a conscious effort to adapt to a changed environment. The process is random and statistical.",
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      "slug": "without-these-experimental",
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      "text": "Without these experimental tests, very few physicists would have accepted general relativity. There are many hypotheses in physics of almost comparable brilliance and elegance that have been rejected because they did not survive such a confrontation with experiment. In my view, the human condition would be greatly improved if such confrontations and willingness to reject hypotheses were a regular part of our social, political, economic, religious and cultural lives.",
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