Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-12 Thread Russell Standish
On Fri, Oct 10, 2008 at 01:54:45PM -0400, Phil Henshaw wrote: Russ, You say: I'm trying a slightly different tack with Tierra, of artificially inducing mass extinctions every now and then. I have also tried reducing parsimony pressure from time to time (I'm not sure what would be the

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-12 Thread Phil Henshaw
, 2008 7:20 AM To: [EMAIL PROTECTED]; The Friday Morning Applied Complexity Coffee Group Subject: Re: [FRIAM] Relaxed Selection, a b-level posting On Fri, Oct 10, 2008 at 01:54:45PM -0400, Phil Henshaw wrote: Russ, You say: I'm trying a slightly different tack with Tierra, of artificially

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-10 Thread Nicholas Thompson
Group friam@redfish.com Date: 10/10/2008 7:16:11 PM Subject: Re: [FRIAM] Relaxed Selection, a b-level posting One should not confuse economics with biological selection. It would seem plausible that good economic times might lead to rapid evolution of economies, such as during the recent

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-10 Thread Phil Henshaw
11:37 PM To: friam@redfish.com Subject: [FRIAM] Relaxed Selection, a b-level posting Russell Standish offered the following question: What do you think of relaxed selection ? My inexpert response: Well, I am uneasy about the concept. When I used to be a teacher of these things

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-10 Thread Phil Henshaw
Complexity Coffee Group Subject: Re: [FRIAM] Relaxed Selection, a b-level posting Nicholas Thompson wrote: The metaphor is terrible because the time-scale of oscillations of good and bad times in economics is WAY too short for the reproductive capacity of the species to respond. So the times

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-10 Thread Phil Henshaw
] On Behalf Of Russell Standish Sent: Friday, October 10, 2008 1:16 AM To: [EMAIL PROTECTED]; The Friday Morning Applied Complexity Coffee Group Subject: Re: [FRIAM] Relaxed Selection, a b-level posting One should not confuse economics with biological selection. It would seem plausible that good

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-10 Thread Marcus G. Daniels
Phil Henshaw wrote: We could consider the vast variation in canine breeds and the fact that breeding selection as an extreme form of epigenetics has not apparently altered the species they all belong to. Selection from breeding would mostly be constrained genetics, i.e. a big and a small dog

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-10 Thread Douglas Roberts
On Fri, Oct 10, 2008 at 4:24 PM, Marcus G. Daniels [EMAIL PROTECTED]wrote: Phil Henshaw wrote: We could consider the vast variation in canine breeds and the fact that breeding selection as an extreme form of epigenetics has not apparently altered the species they all belong to. Selection

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-10 Thread Phil Henshaw
Marcus says: Phil Henshaw wrote: We could consider the vast variation in canine breeds and the fact that breeding selection as an extreme form of epigenetics has not apparently altered the species they all belong to. Selection from breeding would mostly be constrained genetics, i.e. a

Re: [FRIAM] Relaxed selection

2008-10-09 Thread Russell Standish
David Green proposed somewhat similar ideas back in around 2000. Someone else (I forget who now) mentioned it again in a slightly different form within the last year in an Artificial Life article. I tried running an experiment implementing this idea using Tierra, but have found that I need to

Re: [FRIAM] Relaxed selection

2008-10-09 Thread Gus Koehler
] [mailto:[EMAIL PROTECTED] On Behalf Of Phil Henshaw Sent: Thursday, October 09, 2008 6:21 AM To: 'The Friday Morning Applied Complexity Coffee Group' Subject: Re: [FRIAM] Relaxed selection I'll look up David Green. There have been several directions that people have taken to the fast/slow

[FRIAM] Relaxed Selection, a b-level posting

2008-10-09 Thread Nicholas Thompson
Russell Standish offered the following question: What do you think of relaxed selection ? My inexpert response: Well, I am uneasy about the concept. When I used to be a teacher of these things, students LOVED the idea that some ages and places are harsh and some are mellow, and that

Re: [FRIAM] Relaxed selection

2008-10-09 Thread Tom Carter
: 916.716.1740 www.timestructures.com [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Phil Henshaw Sent: Thursday, October 09, 2008 6:21 AM To: 'The Friday Morning Applied Complexity Coffee Group' Subject: Re: [FRIAM] Relaxed selection

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-09 Thread Marcus G. Daniels
Nicholas Thompson wrote: The metaphor is terrible because the time-scale of oscillations of good and bad times in economics is WAY too short for the reproductive capacity of the species to respond. So the times are sort of independent of the reproduction of the species. Perhaps not..

Re: [FRIAM] Relaxed Selection, a b-level posting

2008-10-09 Thread Russell Standish
One should not confuse economics with biological selection. It would seem plausible that good economic times might lead to rapid evolution of economies, such as during the recent Internet bubble for instance, but not that it would have any influence on us at the genetic level. The sort of idea

Re: [FRIAM] Relaxed selection

2008-10-06 Thread Phil Henshaw
, clear active individual behavior in a passive environment. Phil -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jochen Fromm Sent: Monday, October 06, 2008 3:34 PM To: The Friday Morning Applied Complexity Coffee Group Subject: [FRIAM] Relaxed