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Re: [ontolog-forum] Why most classifications are fuzzy

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Christopher Menzel <cmenzel@xxxxxxxx>
Date: Sat, 9 Jul 2011 00:02:55 -0500
Message-id: <6F8ED80D-58D2-4954-B151-13A83B901ED3@xxxxxxxx>
On Jul 8, 2011, at 9:13 PM, John F. Sowa wrote:
> ...
> As far as logic goes, please remember that Kant claimed that logic had
> not made any advance beyond Aristotle.  But that is false, because
> it completely ignores the contributions by the Stoics and the medieval
> Scholastics.  Peirce studied all those logics in great detail as
> well as the latest math & logic of his day.    (01)

You surprisingly omitted the denouement, that Peirce (and, independently, 
Frege) pretty much invented modern predicate logic, a logic massively more 
powerful than anything Kant had ever dreamed of.    (02)

-chris    (03)

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