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Author Topic:   Abiogenesis
ringo
Member (Idle past 412 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 223 of 305 (396942)
04-23-2007 1:57 PM
Reply to: Message 221 by Fosdick
04-23-2007 1:40 PM


Re: xenoabiogenesis
Hoot Mon writes:
Which scenario for explaining life on Earth is more probable: Earthly abiogenesis or panspermia?
Answer: The second scenario, because it doesn't require an Earthly abiogenesis, which removes a limiting factor and raises its likelihood.
On the other hand, panspermia requires transportation of "something" to earth, which is also a limiting factor - maybe a larger one.

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ringo
Member (Idle past 412 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 246 of 305 (397110)
04-24-2007 12:39 PM
Reply to: Message 245 by Fosdick
04-24-2007 11:45 AM


Re: And the principles are...?
Hoot Mon writes:
Without knowing any abiogenic principles, how can separate the good questions from the bad?
Why do there have to be special "abiogenic principles"? What's wrong with the principles of chemistry?

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Replies to this message:
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ringo
Member (Idle past 412 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 250 of 305 (397127)
04-24-2007 2:31 PM
Reply to: Message 249 by Fosdick
04-24-2007 1:41 PM


Re: And the principles are...?
Hoot Mon writes:
... they don't seem to be enough to make life from scratch....
What does "they don't seem to be enough" mean? How don't they "seem" to be enough? Your objection sounds exactly like the creationist objection to macroevolution. Show us an obstacle or stop asserting that there "must be" one.
Wouldn't you suppose there are a few more principles to be discovered that might help to explain abiogenesis?
Why? What specifically is lacking in the known principles of chemistry?
We know that all living things are made up of the same chemical elements as non-living things. We have a pretty good understanding of how those elements bond to form molecules. We have some understanding - if not complete yet - of the reactions that produce those bonds. All that really seems to be missing is a plausible pathway (or pathways) from goo to you.
... you are the one who thinks genes are just collections of chemicals.
And you are the one who has admitted - more than once - that you have no evidence to the contrary.

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 Message 259 by Modulous, posted 04-24-2007 5:16 PM ringo has replied

ringo
Member (Idle past 412 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 261 of 305 (397147)
04-24-2007 5:32 PM
Reply to: Message 259 by Modulous
04-24-2007 5:16 PM


Re: And the principles are...?
Modulous writes:
The principle of early cell formation for example.
That's a bit further down the road than abiogenesis, isn't it?

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ringo
Member (Idle past 412 days)
Posts: 20940
From: frozen wasteland
Joined: 03-23-2005


Message 292 of 305 (397525)
04-26-2007 11:12 AM
Reply to: Message 290 by Fosdick
04-26-2007 11:00 AM


Re: The chemical v. code test
Hoot Mon writes:
There are more than chemicals in DNA; there are digital messages, too.
The "digital messages" are the arrangement of the chemicals.
A set of chemical structures (alphabet) arranged in different ways ("code") is all that is needed to produce different reactions.

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This message is a reply to:
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