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Re: [ontolog-forum] Presentism (was Re: Ontology of Rough Sets)

To: <tara_athan@xxxxxxxxxx>, "'[ontolog-forum] '" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Matthew West" <dr.matthew.west@xxxxxxxxx>
Date: Thu, 27 Jan 2011 11:44:10 -0000
Message-id: <4d415a94.0b04d90a.5134.36f9@xxxxxxxxxxxxx>

Dear Tara,


While admittedly not bothering with the details of how it would be implemented, presentism strikes me as a temporal reference frame with origin = now, rather than origin =  big bang or  January 1st, 1970, or ...


MW: No, strictly presentism is the claim that nothing exists that does not exist now, and all that is true is true now. The past and the future do not exist. You can probably see that this is wildly inconvenient. However, many computer systems were developed on this basis. They only held a “current state” view of the world, so if a car was red and then painted blue, the colour attribute was changed from red to blue, and you had no way of knowing it was once red. That is presentism.




Matthew West                           

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