[SydPhil] Notification: Drew Khlentzos @ Thu 13 Apr 2017 15:00 - 16:30 (Current Projects)

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Fri Apr 7 15:00:10 AEST 2017

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Title: Drew Khlentzos
'Free Choice' and other puzzling inferences"

The 'Paradox of Free Choice' pits intuitive reasoning against (standard)  
logical reasoning: the salient interpretation of a modal disjunction such  
as 'You can have ice-cream or yoghurt' is that you can have ice-cream and  
you can have yoghurt. But standard logic blocks any such inference.  
Moreover, inserting a special Free Choice Permission rule, FCP, in a  
standard logical setting leads to inconsistency: from the premise that you  
may have yoghurt, P(Y), by (modal) Addition we infer: P(Y v I); whence by  
FCP infer P(Y) & P(I) from which P(I) follows. But then anything is  
permissible if something is. This is the 'Paradox' of Free Choice. What  
appears a mere curio turns out to have surprisingly deep roots — resolving  
the Paradox requires rethinking the role of disjunction in natural  
languages as well as its connection with other connectives.
When: Thu 13 Apr 2017 15:00 – 16:30 Eastern Time - Melbourne, Sydney
Calendar: Current Projects
     * Kristie Miller- creator

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