Must Early Life Be Easy ? The Rhythm of Major Evolutionary Transitions

  title={Must Early Life Be Easy ? The Rhythm of Major Evolutionary Transitions},
  author={Robin Hanson},
If we are not to conclude that most planets like Earth have evolved life as intelligent as we are, we must presume Earth is not random. This selection effect, however, also implies that the origin of life need not be as easy as the early appearance of life on Earth suggests. If a series of major evolutionary transitions were required to produce intelligent life, selection implies that a subset of these were “critical steps,” with durations that are similarly distributed. The time remaining from… CONTINUE READING


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