Re: Evolution in the multiverse

From: Robin Hanson <>
Date: Tue, 17 Nov 1998 08:56:30 -0800

Hal Finney wrote:
>> My thought is that this indicates that evolution of complex SAS is
>> exteremely unlikely, a rather pessimistic view compared with the
>> optimism of Sagan, or for that matter most Alife theorists.
>You might want to take a look at Robin Hanson's paper at
>, specifically the section
>, which identifies as
>many as four separate "hard steps" in the evolution of intelligence, of
>which the last is the Cambrian explosion. Robin also proves that hard
>steps should be roughly equally spaced regardless of their intrinsic

The up to date and technical discussion of this is in
"Must Early Life Be Easy? The Rythm of Major Evolutionary Transitions"
at or .ps

Robin Hanson
RWJF Health Policy Scholar FAX: 510-643-8614
140 Warren Hall, UC Berkeley, CA 94720-7360 510-643-1884
Received on Tue Nov 17 1998 - 09:01:54 PST

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