http://avromandina.net/avrom/2008/12/the-trouble-with-natural-kinds-putnams-version/ Analytic Philosophy for Fun (not Profit) Thu, 29 Oct 2009 14:16:59 -0700 http://wordpress.org/?v=2.8.5 hourly 1 http://avromandina.net/avrom/2008/12/the-trouble-with-natural-kinds-putnams-version/comment-page-1/#comment-3979 Olga Nikolaef Thu, 29 Oct 2009 14:16:59 +0000 http://avromandina.net/avrom/?p=203#comment-3979 putman's essay suggests that earth and twin earth are set in 1750's which is premodern-chemistry and before anyone knew what the chemical structure or the 'essence' if you will of 'water' was. oscar and twin oscar would have not known the difference because their individual perceptions of 'water' would have been the same (colourless, odourless, transparent). there was no way for two ordinary individuals to determine any difference when all they have are their own perceptions. putman’s essay suggests that earth and twin earth are set in 1750’s which is premodern-chemistry and before anyone knew what the chemical structure or the ‘essence’ if you will of ‘water’ was. oscar and twin oscar would have not known the difference because their individual perceptions of ‘water’ would have been the same (colourless, odourless, transparent). there was no way for two ordinary individuals to determine any difference when all they have are their own perceptions.

]]>