Very astute and much to think about, thank you very much!
This is a great site for learning things, and finding out where your preconceptions may be in error when discussing things with people educated in the various fields that visit and share. I know I've learned a lot here/
... as you are new here, some posting tips:
type [qs]quotes are easy[/qs] and it becomes:
quotes are easy
or type [quote]quotes are easy[/quote] and it becomes:
quote:quotes are easy
also check out (help) links on any formatting questions when in the reply window.
Hi Razd, I watched the video. The music was great. But if this is science's answer to the orgin of life, you guys are in big trouble.
Amusingly the application of the video to this thread was about the formation of proto-cells and how cells divide, as discussed in the other posts and which this video showed in detail, based on actual experiments conducted in actual labs. Perhaps you should read Message 1 and the replies first.
I acutally laughed through most of the "important parts" of the video.
Cognitive dissonance is like that.
On this board I have been critized for speculating, dreaming, not showing the evidence etc. and then you have the nerve to show this video?
Did you read the rest of the article? You will see that each element is referenced. If you want to discuss the actual science with Dr Szostak, he has a website where you can contact him: http://genetics.mgh.harvard.edu/szostakweb/ - see people and I believe that it is referenced in the video.
Yes maybe life began that way, ...
Which, curiously, is all we can say at this time. Nobody is claiming that this is what happened, only that it is one possibility, one that works with known science and natural processes.
Okay, I went to the link you provided and I have to admit, I had to look up "self-polymerize" - this stuff is really slow reading for me. I'll have to look at it a few times before I am gonna get it. But I think the main gist is that we are talking about chemicals getting together, forming into a very basic cell-like structure, ... The attached reading material is somewhat difficult as well and has a lot of "out of my league" stuff.
No problem, take your time and check all you want to, that is how the open-minded skeptic operates.
Yes, this is one possibility for the way cells formed, and it can be observed in the lab as well, so it is not just a hypothetical development.
... and then picking and choosing this and that until they achieve life-form? ...
Or just lots of trial and error "tests" with various chemical combinations until one occurs that takes off, that is the hypothesis.
I feel the need to ask if a life-form has been developed in a lab? or, is the current state of development still chemical compounds? No insult intended I just want to know!
No life form has been developed in the lab yet, and the current state is still chemical evolution - where we have replicating molecules that show some mutation and selection.
Of course this gets into the question of "what is life" -- and that is a whole nother ball or worms.
Do you consider the video and the article by Szostak & Ricardo "Life on Earth" in Scientific America Sept. 2009:
A theory? A hypothesis? Speculation? Wishful thinking?
I would say that it is a scientific hypothesis for one way life may have begun on earth. There are others.
We don't have any direct evidence for how life began 3.5 billion years ago on earth, so we may never know: the oldest fossil bearing rocks already show simple life forms existing, so we don't know when it really began or what came before, except that it occurred some time after the formation of the earth (unless it came from space), some 4.55 billion years ago. That doesn't give us much to work with.
quote:Stromatolites are not only Earth's oldest of fossils, but are intriguing in that they are our singular visual portal (except for phylogenetic determination of conserved nucleic acid sequences and some subtle molecular fossils) into deep time on earth, the emergence of life, and the evolving of the beautiful forms of life of modern time. A small piece of stromatolites encodes biological activity perhaps spanning thousands of years.
I would say that it is a scientific theory for how life can begin from chemicals and natural reactions.
The difference is that theory is supported by experimentation and the evaluation of the evidence from this and similar studies: it has been tested, while the actual origin of life is not.
The development of the theory for how life can begin is an integral part to the formation of the hypothesis for how life did begin, as it provides the evidentiary basis to make the hypothesis.