That in nonarithmetic operations the small and slow human brain can still do so much better than the large… — Carl Sagan
That in nonarithmetic operations the small and slow human brain can still do so much better than the large and fast electronic computer is an impressive tribute to how cleverly the brain is packaged and programmed—features brought about, of course, by natural selection. Those who possessed poorly programmed brains eventually did not live long enough to reproduce.
p. 224Source: Wikiquote · CC BY-SA 4.0
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A mutation in a DNA molecule within a chromosome of a skin cell in my index finger has no influence on heredity. Fingers are not involved, at least directly, in the propagation of the species.
p. 27
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.
p. 31
Absence of evidence is not evidence of absence.
p. 7
