Re: poly: ESS for HPLD

From: Anders Sandberg <>
Date: Tue Dec 09 1997 - 04:42:15 PST

Robin Hanson <> writes:

> At 06:05 PM 12/8/97 +0100, you wrote:
> >I have been doing somewhat similar simulations on my own, thinking
> >about the growth and evolution of technospheres. I have written a few
> >precursors to a real simulation of the situation ...
> Could you summarize the assumptions of your simulation?

The basic model is this:

I have a 2d world of cells representing star systems (or volumes of
star systems). From the beginning only one system is "alive"; at each
timestep each active system tries to send out one colony to a random
site within a certain distance. Each system has a "culture vector"
representing its unique properties, which is equal to it's parent
system plus a random mutation vector (often I let this correspond to a
color value to get a graphical display). Very simple, but shows the
clading clearly.

I have experimented with evolution of colony range and probability,
and diffusion of "culture vectors". Some things I want to test is more
deliberate strategies of spreading, several spores at each turn, oases
instead of a continous substrate, and co-evolution of memes in the
growing area of civilized space. I begun to work this morning with a
simple model of memetic ecosystems.

> If I find time,
> I'll summarize the assumptions of the published models Brin mentioned.

I would be very interested in hearing more about them.

Anders Sandberg                                      Towards Ascension!                  
GCS/M/S/O d++ -p+ c++++ !l u+ e++ m++ s+/+ n--- h+/* f+ g+ w++ t+ r+ !y
Received on Tue Dec 9 12:34:20 1997

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