Re: Intriguing new concept regarding human origins


John Wilkins wrote:
Gregory A Greenman wrote:
In article <e3mcsr$1a2l$2@xxxxxxxxxxxxxxxxxxxx>, John Wilkins
<john@xxxxxxxxxxxxx> declared...
Gregory A Greenman wrote:
In article <1146910820.683509.97750
@v46g2000cwv.googlegroups.com>, hugheaston01@xxxxxxxxxxx
<hugheaston01@xxxxxxxxxxx> declared...
Desertphile wrote:

1) Many organisms destroy their environments;
2) Other organisms move into those destroyed environments and live
perfectly happy and healthy
Example please? AFAIK, most if not all cases of organisms damaging
their environments are foreign species introduced by humans. Hardly
relevant to the more general case of life throughout Earth's history.

How about a disease or parasite that kills its host?
It doesn't matter so long as the host species is numerous and able to replace
the lost "resources" (from the pathogen's POV). Once host numbers get too low,
there is selection for less virulence. I doubt there have been many pathogens
that extinguish all their hosts.


It matters to the disease or parasite in that host. Their
relatives live on, but they die. Those particular germs,
bacteria, parasites or whatnot have destroyed their environment,
thus they are examples of #1 above.

You are equivocating between the type and the token. That *population* will go
extinct, but the species/strain won't.

Although some have - but I suppose that's typically when the population
is low anyway, due to other pressures, so really a virulent parasite
(say a virus) isn't the sole cause of extinction, just the straw that
breaks the camel's back.

.

Relevant Pages

  • Re: Intriguing new concept regarding human origins
    ... Other organisms move into those destroyed environments and live ... It doesn't matter so long as the host species is numerous and able to replace the lost "resources". ...
    (talk.origins)
  • Re: Intriguing new concept regarding human origins
    ... Other organisms move into those destroyed environments and live ... It doesn't matter so long as the host species is numerous and able to replace ...
    (talk.origins)
  • Re: Whats Lon Horiuchi doing now
    ... Which the mother and child are. ... metabolically dependent on the host). ... a) A parasite is an invading organism -- coming to parasitize ... A human embryo or fetus is formed from a fertilized egg -- ...
    (talk.politics.guns)
  • Re: Whats Lon Horiuchi doing now
    ... Which the mother and child are. ... a) A parasite is defined as an organism of one species living ... metabolically dependent on the host). ... A human embryo or fetus is an organism of one species (Homo ...
    (talk.politics.guns)
  • Re: Whats Lon Horiuchi doing now
    ... Which the mother and child are. ... a) A parasite is defined as an organism of one species living ... metabolically dependent on the host). ... A human embryo or fetus is an organism of one species (Homo ...
    (talk.politics.guns)