Evolution and Chanc1

Evolution and Chanc1 - Evolution and Chance Random Relative...

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Evolution and Chance Random Relative to What? To understand the randomness claimed for evolution by scientists, as opposed to that feared by theologians and moral philosophers, it's important to ask "random relative to what?" In any model of a process as described by a scientific theory, there are many things taken for granted. Philosophers of science refer to these as ancillary assumptions or hypotheses. Some of these are assumed from ignorance: science might not yet have any workable and tested theory or model to deal with that class of phenomena. Others are assumed because they are well worked out in another scientific theory or discipline. For example, Darwin knew that there was heredity, but he did not have a good theory of heredity to work by. His selection theory (the version he and Wallace published) had to assume that traits were heritable. He did propose a theory of heredity (pangenesis) based on a now discredited view of the influence of the use of traits on reproduction, but it was never essential to the theory of natural selection. So far as his theory of evolution by selection was concerned, heredity was an area to be filled out later. Once Mendel's principles of heredity were rediscovered, permitting mathematical models of
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This note was uploaded on 11/14/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.

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Evolution and Chanc1 - Evolution and Chance Random Relative...

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