Message 2002-02-0019: Re: interesting style of definition

Mon, 25 Feb 2002 13:45:35 -0500 (EST)

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Date: Mon, 25 Feb 2002 13:45:35 -0500 (EST)
From: "T. Mike Keesey" <tmk@dinosauricon.com>
To: "Jonathan R. Wagner" <jonathan.r.wagner@mail.utexas.edu>
Cc: -PhyloCode Mailing List- <PhyloCode@ouvaxa.cats.ohiou.edu>
Subject: Re: interesting style of definition

On Mon, 25 Feb 2002, Jonathan R. Wagner wrote:

> The only objective measure of relationship is what Darwin so succinctly
> termed "propinquity of descent," frequently phrased as "recency of common
> ancestry."

These seem like different terms to me, "propinquity" meaning "nearness".
In my original example:

-+-A
 `-+-B
   `-------------------------------------------------------C

Some might say that B is nearer in descent to A than to C. Or maybe I'm
misunderstanding the phrase. (I probably am.)

> I have never seen any reason to doubt that this is what is meant
> by "related" in any phylogenetic context.

True.

> However, it might be helpful to explain this in the Code.

Agreed, if it's to be used. Or you could just use the slightly longer but
more explicit phrase "sharing more recent ancestry with".

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