by Setsuna on Sat Dec 04, 2004 5:29 pm
[s]Mr Comedy wrote on 03:28, 2nd Dec 2004:
Evolution poses a challenge too. If things evolve, then why is there a need for a god?
I haven't got time to go into all the arguments about this, and I could write a book on the subject. However, I have delved into Biology enough to understand that at the heart of evolution there are assumptions, just like other faiths.
Therefore evolution is also a faith.
(Personally I believe that there is a certain amount of variability. I think that from one cat you can get over time, any sort of cat. But I don't think you can get a dog).
Much as I don't want to turn this into an argument for or against evolution, this is what I have been convinced of.
Evolution is not a faith. Evolution is a mechanism that has been observed in action and is backed up by continuous and careful research, especially over the last 50 years. There are theories and assumptions in evolution, but that is often to be able to quantify such a complex process. There are theories assumptions in Chemistry, Physics and Geology - are they faiths?
If you see lots of beauty in the world, in a scary american beauty sort of way, then thats great. Everything that has evolved exploits an available niche in a habit - therefore they are adapted for 'functionality', like you said. However, there are so many redundant and vestigial traits in many organisms, junk DNA, pelvis in snakes etc. that it seems very odd to include them. Creationists use arguments such as the convergent evolution of an eye (eg. in an octopus and a human), but there are only so many ways you can make a lens for an eye. Functionality again. As for the cat and dog thing you said, go back far enough, and you find a common ancestor for any two species. Speciation is a slow process; a dog doesnt suddenly morph from a cat or anything like that. Nothing was planned - everything just gradually progresses, mutualisms develop, novel characters arise, some exploit others - LIFE!
If you did evolution in second year, Mike Ritchie gave a cracking creationist-bashing lecture that made a lot of good points. Im really bad at arguing a case without someone arguing back. When you learn evolution, very little time is spent on seeing if you 'believe' in it. Instead, they just ask all the creationists in the first lecture to change courses.