Re: How come every new race isn't destroyed by inbreeding?

From: Tim Tyler (tim_at_tt1lock.org)
Date: 01/15/05 

Date: Sat, 15 Jan 2005 18:41:33 +0000 (UTC)

William Morse <wdmorse@twcny.rr.com> wrote or quoted:
> Tim Tyler <tim@tt1lock.org> wrote in
> > Perplexed in Peoria <jimmenegay@sbcglobal.net> wrote or quoted:
> >> > > From: William Morse <wdmorse@twcny.rr.com>
> >> > (quoting from Steve Olson's "Mapping Human History":)

> >> > > ... Eventually, the number.. must shrink to two...
> >> > > because the number of extant lineages can only decline with each
> >> > > previous generation - it cannot increase. When the inevitable
> >> > > decline occurs, the women at the roots of the two separate
> >> > > lineages would have to be sisters.
> >> >
> >> > No they wouldn't have to be sisters. [snip]
> >>
> >> Perhaps you have misinterpreted Olson. If you read "when the
> >> inevitable decline occurs" to mean the decline from 2 to 1,
> >> rather than the decline to 2, then Olson's statement is correct.
> >
> > I don't think Olson's statement was correct: [snip]
>
> In the interest of brevity, I left out some of Olson's wording - as
> indicated by the ...'s. Olson notes that two lineages can exist for a
> while. But as Jim the Perp correctly points out, the "inevitable" decline
> is the decline from 2 (or more) to 1, not the decline to 2. [...]

I was going by:

``Eventually, the number.. must shrink to two... because the number of
  extant lineages can only decline with each previous generation - it
  cannot increase. When the inevitable decline occurs, the women at
  the roots of the two separate lineages would have to be sisters.''

...where the decline to two is what the author fairly explicitly
says he is talking about.

If the quotation contains missing sections - where ".." and "..."
occur - then that explains the origin of the miscommunication. 

-- 
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