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Author Topic:   future evolution of humanity
Peter
Member (Idle past 1478 days)
Posts: 2161
From: Cambridgeshire, UK.
Joined: 02-05-2002


Message 14 of 34 (44945)
07-03-2003 9:30 AM
Reply to: Message 1 by Autocatalysis
06-20-2003 8:21 AM


What makes you think that human populations aren't
changing?

This message is a reply to:
 Message 1 by Autocatalysis, posted 06-20-2003 8:21 AM Autocatalysis has replied

Replies to this message:
 Message 19 by Autocatalysis, posted 07-05-2003 8:32 PM Peter has replied

  
Peter
Member (Idle past 1478 days)
Posts: 2161
From: Cambridgeshire, UK.
Joined: 02-05-2002


Message 17 of 34 (45059)
07-04-2003 9:00 AM
Reply to: Message 16 by compmage
07-04-2003 3:12 AM


Have you ever read the sci-fi short story 'The Marching Morons'
.. can't remember the author unfortunately but it puts forward
an opinion that people of higher intelligence (NOT MY VIEW
ITS JUST A STORY) decided to have only one or two children
quite late in life, while less intelligent people had many children
and started early in life.
The result was that the average intelligence level of the
population dropped off sharply.
Factors along those lines (if linked to heritable features)
could conceivably lead to a change in the allelic frequencies
within human populations ... maybe weaker muscles because we
have machines to do stuff for us ...

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 Message 16 by compmage, posted 07-04-2003 3:12 AM compmage has replied

Replies to this message:
 Message 18 by compmage, posted 07-04-2003 3:02 PM Peter has replied

  
Peter
Member (Idle past 1478 days)
Posts: 2161
From: Cambridgeshire, UK.
Joined: 02-05-2002


Message 27 of 34 (45291)
07-07-2003 12:00 PM
Reply to: Message 18 by compmage
07-04-2003 3:02 PM


... but I didn't mention poor people at all!!!!

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 Message 18 by compmage, posted 07-04-2003 3:02 PM compmage has replied

Replies to this message:
 Message 30 by compmage, posted 07-09-2003 3:35 AM Peter has replied

  
Peter
Member (Idle past 1478 days)
Posts: 2161
From: Cambridgeshire, UK.
Joined: 02-05-2002


Message 28 of 34 (45293)
07-07-2003 12:04 PM
Reply to: Message 19 by Autocatalysis
07-05-2003 8:32 PM


Hard to say without detailed future knowledge of the
earth's environment.
More UV could drive noticeable change, similarly any
global climatic change could provide a selective
pressure amongst the developing world which doesn't exist
in the developed world (a brave new world of isolation).

This message is a reply to:
 Message 19 by Autocatalysis, posted 07-05-2003 8:32 PM Autocatalysis has replied

Replies to this message:
 Message 29 by Autocatalysis, posted 07-09-2003 1:24 AM Peter has replied

  
Peter
Member (Idle past 1478 days)
Posts: 2161
From: Cambridgeshire, UK.
Joined: 02-05-2002


Message 31 of 34 (45490)
07-09-2003 4:48 AM
Reply to: Message 30 by compmage
07-09-2003 3:35 AM


Oh ... sorry.
No I was just referring to the possibility of selection because
of unusual features of human societies.
The story is about the trend amongst the so-called intelligencia
(bearing in mind this story was written in the early 60's) to
have few or no children. It put forward the idea that intelligence
is inherited, and that if the trend continued the majority
of individuals would have lower than average IQ in the future.

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Peter
Member (Idle past 1478 days)
Posts: 2161
From: Cambridgeshire, UK.
Joined: 02-05-2002


Message 32 of 34 (45493)
07-09-2003 4:53 AM
Reply to: Message 29 by Autocatalysis
07-09-2003 1:24 AM


But there is effective geographical isolation.
If you are from Europe (for example) how many Mauries (SP?)
do you know ... or Bantu, or Inuit, or ....
We have geographic isolation and we also have cultural isolation
in many cases. Some individuals refuse out-right to take partners
outside of their own race, religion, or what-have-you.
Sexual selection is also a part of Darwin's original concept.
While we are able to travel, few do in order to meet diverse
mates. The 'slow-down'/stop to evolution that we seem to have
may be more to do with the apparent genetic bottleneck that
humans have encountered sometime in recent (geological)
time.

This message is a reply to:
 Message 29 by Autocatalysis, posted 07-09-2003 1:24 AM Autocatalysis has replied

Replies to this message:
 Message 33 by Autocatalysis, posted 07-09-2003 5:03 AM Peter has replied

  
Peter
Member (Idle past 1478 days)
Posts: 2161
From: Cambridgeshire, UK.
Joined: 02-05-2002


Message 34 of 34 (45499)
07-09-2003 5:22 AM
Reply to: Message 33 by Autocatalysis
07-09-2003 5:03 AM


True enough .... this is a speculative topic though

This message is a reply to:
 Message 33 by Autocatalysis, posted 07-09-2003 5:03 AM Autocatalysis has not replied

  
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