Showing posts with label Natural Selection. Show all posts
Showing posts with label Natural Selection. Show all posts

Wednesday, 4 July 2007

Debate on Darwin's Theory of Evolution

It is a favorite argument of Young Earth Creationists in attacking the Theory of Evolution to pronounce - "Charles Darwin renounced his theory on his death bed" ...Even if it were true that Darwin renounced his theory (there is no evidence that he did), what of it and so what?

This pathetically weak and flimsy argument used as an attack on the Theory of Evolution is known as a non sequitur, definitions of which are: 1) An inference or conclusion that does not follow from the premises or evidence; 2) A statement that does not follow logically from what preceded it (definitions: Answers.com).

The reason that it is a non sequitur is because the inference that they use infers that if Darwin renounced his theory on his death bed, then the theory must be incorrect. Thus, the body of overwhelming evidence, in fact tons and tons of the stuff must be wrong because on his death bed Darwin said so.

Anyone with a right mind can see that the Creationists that make this statement, do it illogically ignoring all the preceding evidence from now back to Darwin's day.

The point is that the Darwinian Theory of Evolution would still be correct even if Darwin never lived, it just wouldn't be called Darwinism. It would of needed someone else to come along and discover the mechanism of Natural Selection. But the fact of Natural Selection as the mechanism that directs the evolutionary process in combination with genetic recombination, is a scientific fact and it would remain a scientific fact whether Darwin denied it or not.

Darwin was of course unaware of DNA. Charles Darwin's great discovery was Natural Selection. The awareness of the genetic recombinations which would allow descent with modifications of species through time was a later discovery...a discovery that only strengthened Darwin's theory. Evolution itself was not Darwin's discovery. Evolution had been speculated by many individuals before Darwin, even long before him. What Darwin did was discover the mechanism that would allow evolution to run ...Natural Selection.

This anti-Darwinian argument put forward by Creationists is similar to the more general attack they put forward to attack atheists. They are often heard saying - "Albert Einstein believed in God" ...as if by some magic of the pronouncement atheists must be wrong. This anti-atheism argument is no less flimsy than the anti-Darwinian one.

It should also be noted that Einstein was most definitely not a theist. In terms of believing in a personal God that performed miracles and had a hand in our daily lives: Einstein was most definitely atheistic.

Einstein certainly did use the word God when explaining aspects of the Universe. But his meaning of God was purely as a personification of the laws of nature working in harmony. He never meant God in scriptural context such as a Jewish, Christian or Islamic God.

"It was, of course, a lie what you read about my religious convictions, a lie which is being systematically repeated. I do not believe in a personal God and I have never denied this but have expressed it clearly. If something is in me which can be called religious then it is the unbounded admiration for the structure of the world so far as our science can reveal it." (Albert Einstein, 1954).

Source(s):
Albert Einstein Quote: The Human Side, edited by Helen Dukas and Banesh Hoffman, Princeton University Press






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Do You Believe in Evolution by Natural Selection?

I'm often asked asked the question: "Do you believe in Evolution by Natural Selection?" - I usually respond by saying... "No, belief is the wrong word. Rather, I accept evolution based on the overwhelming evidence".

The reason I don't like the word belief; is that it suggests I am holding my position purely based on a belief, without any concrete foundation with which to back it up. I usually manage to shorten the conversation by saying "I accept Evolution by Natural Selection based on the evidence", rather than "I believe". Indeed, when a creationist asks - "Do you believe in evolution" ...A religious connotation is almost always implied in the word belief. They assume it as a position of faith and thus, held as a religious position.

But for many creationists that is not enough and they will push the conversation further by saying "it's just a theory". The implication here is that theory just means guess, hunch, idea, speculation and other synonyms of this sort.

"Just a theory" is a total misunderstanding of what theory means in its scientific definition. Theory in scientific terms does not mean guess or hunch as it does in everyday usage.

A scientific theory is a higher level concept than fact. In other words it is higher in the hierarchy of conceptual definitions. A scientific theory is the framework which binds non-contradictory facts together, into an integrated whole or unit. A scientific theory is the 'umbrella' under which the facts sit. The more facts you have within a scientific theory, the stronger that theory becomes.

The faulty logic in assuming (sometimes for politically dishonest reasons) that a scientific theory is nothing better than a guess or hunch, is based on an erroneous premise. It presumes that scientific theories are waiting to become scientific facts, when more data in the form of facts arrive. But a scientific theory never becomes a scientific fact. A scientific theory is always classed as tentative...

For example, Einstein's Theory of Relativity will never become the Fact of Relativity. The reason that we always class scientific theories as tentative is because of the humility of the scientific method. The assumption in science is that science and scientists should not be arrogant and therefore one should never assume that a theory cannot ever be overthrown for a better theory.

But, what would it take to overthrow the Theory of Evolution by natural Selection... It would take an absolutely gargantuan discovery or set of discoveries and it would need to be so, because Evolution by Natural Selection is supported by tons and tons of evidence which has grown rapidly since Darwin's day and is growing further every single day.

Intelligent Design, is not a theory that even comes close to overthrowing Evolution by Natural Selection. Indeed, it is not a scientific position but a religious one.

The Intelligent Design advocates tactic is not to produce any science that could potentially overthrow Evolution by Natural Selection. Rather, they "debate the controversy" as they like to call it.

The fact is that although scientists do debate certain aspects of the Evolutionary Theory, what they are not debating is whether Evolution happens or not. There is no such debate. This is a straw man set up by Intelligent Design advocates.






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