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Re: [ontolog-forum] The class of the planet Venus

To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Chris Menzel <chris.menzel@xxxxxxxxx>
Date: Tue, 10 Jul 2012 21:02:16 -0500
Message-id: <CAO_JD6NfCbDay8822JBESBC75R38K3=RyzeDE-thB7gaoiem-Q@xxxxxxxxxxxxxx>
On Tue, Jul 10, 2012 at 5:25 PM, <cassidy@xxxxxxxxx> wrote:
Wandering far off topic, ergo changing the topic from 'Truth':

A comment on the comment of Doug F.:
>> However, one would stretch to come up with what
>"an instance of the
>> planet Venus" would be.

This touches on an ontological issue that concerns me for several reasons: possible worlds.

Consider the planet Venus in each of the Sci-Fi novels in which the planet is described - it can have different properties, therefore is in fact a different individual.

That is *far* from clear. Suppose in one story it simply lacks a single grain of sand that it actually has. I'm certainly not inclined to say it is a different individual.


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