Login

Join for Free!
112363 members


What is the exact definition of life?

Debate and discussion of any biological questions not pertaining to a particular topic.

Moderator: BioTeam

Re: What is the exact definition of life?

Postby Alberts » Fri Feb 06, 2009 3:01 pm

We simply cannot deny that probability. Just as you now, people in ancient times did not believe the existence of bacteria and viruses. The Universe is infinite both in macro and micro perspective.
Last edited by Alberts on Wed Mar 04, 2009 2:49 pm, edited 2 times in total.
Alberts
Garter
Garter
 
Posts: 16
Joined: Thu Jan 08, 2009 3:39 pm

Re: What is the exact definition of life?

Postby JorgeLobo » Fri Feb 06, 2009 7:26 pm

LOL - Try to understand - some of us are scientists. We don't engage in childish projections based on nothing but thin air and uninformed BS.

Give us even the slightest technical support for your foolish proposal - even the slightest.
JorgeLobo
Coral
Coral
 
Posts: 424
Joined: Mon Nov 17, 2008 12:12 am

Postby AstusAleator » Tue Feb 10, 2009 11:55 pm

He called it an "imagination." I can't think of any great scientists that haven't had some sort of imagination.

I hope you've been warned for griefing.
What did the parasitic Candiru fish say when it finally found a host? - - "Urethra!!"
User avatar
AstusAleator
King Cobra
King Cobra
 
Posts: 1039
Joined: Tue Jan 24, 2006 8:51 pm
Location: Oregon, USA


Re: What is the exact definition of life?

Postby JorgeLobo » Wed Feb 11, 2009 2:52 am

No - he offered it as a probability that can't be denied - please read his post. He did NOT call it imagination.
JorgeLobo
Coral
Coral
 
Posts: 424
Joined: Mon Nov 17, 2008 12:12 am

Postby AstusAleator » Wed Feb 11, 2009 7:05 am

Ok, poor choice of words on his part when defending the magazine's hypothetical "imagination." Replace probability with possibility and there you have it, back to the realm of maybe/whatif.

Anyhow, I used to have the same sorts of thoughts when I was in middle/high school. In fact speculations like these were probably a large part of what drove me to learn more about physics, both atomic and astronomical. I don't see anything wrong with sharing thoughts like these - as long as one is not presenting them as fact from a supposed position of authority on the subject.

I'm not sure what you're looking for in your challenges and insults, but they don't seem to be accomplishing much.

If you're so concerned, really, then maybe give a brief synopsis (or long detailed if you prefer) of how the physical properties of atoms and galaxies differ - and why you think that the situation postulated by his magazine could not exist.

I'm just suggesting that it might be more constructive to inform than to ridicule.
What did the parasitic Candiru fish say when it finally found a host? - - "Urethra!!"
User avatar
AstusAleator
King Cobra
King Cobra
 
Posts: 1039
Joined: Tue Jan 24, 2006 8:51 pm
Location: Oregon, USA

Re: What is the exact definition of life?

Postby charles brough » Thu Feb 12, 2009 2:47 pm

To have an effective definition of life does not require that it be "exact." Indeed, nothing is exact. We cannot even give an exact definition of a chair. A definition of life, it seems to me, must be what is subject to natural selection, has a life cycle and reproduces. If it does not do all three but only two out of three, perhaps it is "quasi-life." If only one, "pseudo-life."
User avatar
charles brough
Coral
Coral
 
Posts: 155
Joined: Mon Jun 06, 2005 3:22 pm
Location: California

Re: What is the exact definition of life?

Postby JorgeLobo » Sun Feb 15, 2009 3:04 am

LOL - I'll look for that in Websters.
JorgeLobo
Coral
Coral
 
Posts: 424
Joined: Mon Nov 17, 2008 12:12 am

Re: What is the exact definition of life?

Postby biohazard » Sun Feb 15, 2009 1:07 pm

Alberts wrote:I have seen an interesting imagination from an magazine: There may exist a living form so small that they just live on the surface of electron; also there may exist a very large living form that our Galaxy just is an atom of their organism.
Etc.

I remember thinking the same at some stage. Apparently the universal tendency of things rounding other things becomes obvious to people at certain age, and then it's of course interesting to postulate that there could be universes in different "scales" because of this apparent logic: life on electron surface and stars being just electrons of larger systems.

Naturally when you then learn your physics bit more, the idea becomes a that bit naive. But what the hell, even if you are a hardcore scientist who only relies on solid reason, you should sometimes give your imagination a childish freedom. Who knows, maybe sometimes something more mature can be refined from those absurd ideas ;)

And of course, since you really cannot see what's inside a quark or a boson, who knows what small green men live there. You can freely call the idea stupid, childish, unrealistic or whatever, but you may still find yourself having a hard time disproving it!
User avatar
biohazard
King Cobra
King Cobra
 
Posts: 776
Joined: Sun Apr 08, 2007 6:45 pm

Re: What is the exact definition of life?

Postby Alberts » Sat Feb 21, 2009 2:28 pm

We have not discovered or could not made other forms of life ,such as extraterrestrial life, artificial life, life based on different matter, life on different scale (e.g. life on the surface of electron), not because they are not exist or are impossible to make, but just because our current technology of observing and making is extremely limited.
The probability of existence or making of those living forms raises a great challenge to the realm of theoretical biology and biophilosophy. Then defining life becomes more and more difficult.
Alberts
Garter
Garter
 
Posts: 16
Joined: Thu Jan 08, 2009 3:39 pm

Previous

Return to General Discussion

Who is online

Users browsing this forum: No registered users and 7 guests

cron