Hypothesis 2

Non-targeted evolution

Vase from the archaeological museum, Cusco, Peru
Vase from the archaeological museum, Cusco, Peru

According to Darwin, biological evolution is open-ended and not targeted. That means evolution cannot be understood in terms of its goal, instead in terms of its starting point. A causal chain of argumentation must be built up from the starting point. (Example: feathers were not created to allow the birds to fly.)


Ernst Mayr wrote about this in his great work, The Growth of Biological Thought:

Darwin’s theory uncompromisingly rejects the existence of definitive factor in the cause of evolutionary change
(German: Ernst Mayr 2002: Die Entwicklung der biologischen Gedan­kenwelt, Berlin et al., p. 417)

According to Darwin, there are 2 steps of evolution, the 1st being genetic variability, and the 2nd the natural selection in every generation of living beings. A long-term goal for evolution cannot be in any way pursued, since intermediate generations would have died out long before the goal could be achieved.

The reason for this is that the half-finished organs, (e.g. half-finished feathers for flying) would not lead to selection success for the individuals that possess them.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s