Darwin-L Message Log 7:43 (March 1994)

Academic Discussion on the History and Theory of the Historical Sciences

This is one message from the Archives of Darwin-L (1993–1997), a professional discussion group on the history and theory of the historical sciences.

<7:43>From bsinger@eniac.seas.upenn.edu  Wed Mar 16 05:07:47 1994

From: bsinger@eniac.seas.upenn.edu (Bayla Singer)
Subject: Re: Humanoid fossils in Time
To: darwin-l@ukanaix.cc.ukans.edu
Date: Wed, 16 Mar 1994 06:07:43 -0500 (EST)

Excuse me: I'm having a bit of trouble visualizing the different time
scales required for

	(a) gene-pool mixing via exchange of migrating individuals, which
           would support the evolution of several populations along
	    similar/same lines

versus

	(b) evolution of H erectus to H sapiens being 'finished' at
	    one site, and spreading with little or no further evolution.

Spread-and-evolve seems congruent to Evolve-and-spread: why is it not so?

Would someone please spell this out?

Many thanks.

--bayla