Emissary wrote:Noel wrote:gjm wrote:

Educate me. What do you mean by modes...
Just what I said on my post, e.g. just because a fish gains the ability to spend some time on land it doesn't mean it can't go back in the water any more. The first creatures to walk on land may only have been able to survive for a short time out of the water.
And there are primitive lifeforms that can reproduce by budding as well as by sexual reproduction
http://en.wikipedia.org/wiki/Hydra_(genus)#Reproduction
Evolution (if true) is a gradual process, gaining a new ability does not necessarily mean losing an old one.
there are not actually many facts to back this up though, hence its a theory. Scientists are always full of "mays" and "buts" how in any way is that different from a religious person or someone who believes in aliens?
the only possible way you can be considered a rounded scientist is if you consider all and every circumstance and aren't dragged into dogma, as scientists are slowly doing now
Evolution takes just as much a leap of faith as religion except is doesn't have reams and reams of human anecdotal evidence to back it up as religion does. One is based on small fractures of evidence and the other is based on the fallible human imagination.
All i can see in this thread is the only people with opened minds are those that believe in the atlantis theory as they don't even remotely disbelieve in the other two. They have a knowledge that exploring all theorys will eventually lead to a better understanding of themselves and where they came from
I think you are putting words into my mouth there. I can't remember saying anything at all about God or Space Aliens in my post.
The thing about the Hydra IS a fact. And I mention it only as a counter argument to gjm's assertion that going from simple cell division to sexual reproduction has to be a step change rather than a gradual change.
Also my speculation about animals that can survive for a short time out of water was meant in answer gjm's speculation that the switch from land to water had to happen in a single generation. Clearly it's possible to see how it could take many generations for the total transition.
But evolution is not a belief system, it is a theory, just like any other scientific theory. It's not like a mathematical theorem that can be either proven or disproved (even in mathematics not everything that is true can be proven - see Godel's incompleteness theorem )
http://en.wikipedia.org/wiki/G%C3%B6del ... s_theorems
Life is full of uncertainties, the best we can do is go along with the balance of probabilities.
Do I believe in GOD (Christian or otherwise) ? No I don't - but I'm not ruling it out as a possibility, any more than you should rule out evolution as a possibility.
My own view is that although the spontaneous origin of life and subsequent evolution is highly improbable, it's a lot less improbable that the idea that the whole universe was created by some spiritual being.
There is far more to existence than meets the eye and some things may be forever unknowable.
On the whole I'm content to admit that I just don't know the answers, but that does not mean I'm not fascinated - or indeed awed - by the mystery of it all.