>We only know that: > P(sex | cybersex) = high > P(STD | sex) = high > >If we're also given that > P(STD | cybersex) = 0
I think you just need a few more bits of knowledge: P(sex | cybersex) = high P(STD | sex) = high P(STD | !contact) = 0 P(contact | cybersex) = 0 The 0-values (0 strength, extremely high confidence), would outweigh the problematic logic chain, and would generate a conclusion that cybersex does not lead to STDs with high confidence. Both conclusions are valid, but the negative correlation between STD and cybersex would have higher confidence than the positive one. Mike On Wed, Jul 30, 2008 at 12:59 AM, YKY (Yan King Yin) <[EMAIL PROTECTED]> wrote: > On 7/30/08, Benjamin Johnston <[EMAIL PROTECTED]> wrote: > >> The relationship between cybersex and sex is of a completely different >> character to the relationship between penguins and birds. > > Can you define that difference in an abstract, general way? I mean, > what is the *qualitative* difference that makes: > "cybersex is a kind of sex" > different from: > "penguin is a kind of bird"? > > You may say: cybersex and phone sex lacks property X that is common > to all other forms of sex. But then, anal sex or sex with a condom do > not get a female pregnant, right? So by a similar reasoning you may > also exclude anal sex or sex with a condom as sex. > > It seems that you (perhaps subjectively) require "having physical > contact" as a defining characteristic of sex. But I can imagine > someone not using that criterion in the definition of sex. > > Also relevant here is Wittgenstein's idea of "family resemblance": > sometimes you may not be able to list all the defining properties of a > concept. > > YKY > > > ------------------------------------------- > agi > Archives: https://www.listbox.com/member/archive/303/=now > RSS Feed: https://www.listbox.com/member/archive/rss/303/ > Modify Your Subscription: https://www.listbox.com/member/?&; > Powered by Listbox: http://www.listbox.com > ------------------------------------------- agi Archives: https://www.listbox.com/member/archive/303/=now RSS Feed: https://www.listbox.com/member/archive/rss/303/ Modify Your Subscription: https://www.listbox.com/member/?member_id=8660244&id_secret=108809214-a0d121 Powered by Listbox: http://www.listbox.com
