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  4. Ernst Mayr
  5. On Earth, among millions of lineages or organisms and...

On Earth, among millions of lineages or organisms and perhaps 50 billion speciation events, only one led to high intelligence ; this makes me believe its utter improbablity.

Ernst Mayr
Believe, Events, Earth
On Earth, among millions of lineages or organisms and perhaps 50 billion speciation events, only one led to high intelligence ; this makes me believe its utter improbablity.