# Quote — Carl Sagan, Dragons of Eden

> Evolution often uses this strategy. Indeed, the standard evolutionary practice of increasing the amount of genetic information as organisms increase in complexity is accomplished by doubling part of the genetic material and then allowing the slow specialization of function of the redundant set.

- Author: [Carl Sagan](https://www.leafyquotes.com/carl-sagan.md)
- Book: [Dragons of Eden](https://www.leafyquotes.com/carl-sagan/dragons-of-eden.md)
- Page: 183
- Source: [Wikiquote](https://en.wikiquote.org/wiki/Carl_Sagan#The_Dragons_of_Eden_(1977)) ([CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/))
- Quote page: https://www.leafyquotes.com/carl-sagan/dragons-of-eden/evolution-often-uses

## More from this book

> 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 — [Quote page](https://www.leafyquotes.com/carl-sagan/dragons-of-eden/a-mutation-in-a-dna.md)

> 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 — [Quote page](https://www.leafyquotes.com/carl-sagan/dragons-of-eden/there-is-a-popular.md)

> Absence of evidence is not evidence of absence.

p. 7 — [Quote page](https://www.leafyquotes.com/carl-sagan/dragons-of-eden/absence-of-evidence.md)