> On 27 Oct 2018, at 02:55, Brent Meeker <[email protected]> wrote: > > > > On 10/26/2018 1:03 PM, Philip Thrift wrote: >> >> >> On Friday, October 26, 2018 at 2:33:13 PM UTC-5, Tomas Pales wrote: >> >> >> On Friday, October 26, 2018 at 8:06:03 PM UTC+2, Bruno Marchal wrote: >> >> OK. But it seemed to me you said that is better not to make unnecessary >> assumption. >> >> My only ontological assumption is that existence is logical consistency. >> This assumption gives rise to the set-theoretic multiverse, and I don't mean >> just ZF or ZFC but all consistent versions of pure set theory. You add >> assumptions that restrict this set-theoretic multiverse to arithmetic. >> >> >> >> "Logical consistency" is likely not needed for existence. >> >> https://plato.stanford.edu/entries/dialetheism/ >> <https://plato.stanford.edu/entries/dialetheism/> > > Logical consistency is a relation between sentences. It's not about > existence. The sentences might be about the existence of something, but > that's different. Or the sentences may have variables quantified by > existential quantifiers, but that's different too. To say logical > consistency is needed for existence would be a category error.
Indeed. A large number of people would disappear if logical consistency was obligatory. Maybe even PA. Only RA would remain for sure, and the ontology of mechanist would persist, but the phenomenology would be only talk by inexistent zombies. Now, I can make some sense of what Pales want: that “real things” cannot be used to prove “0=1”, perhaps. I am OK with that. Bruno > > Brent > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at https://groups.google.com/group/everything-list > <https://groups.google.com/group/everything-list>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
