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John: > Robert LeChevalier scripsit: > > A faster-than-light spaceship is not the same as a purple unicorn, so the > > quantifier on "lo" must exclude the empty set. The set of > > faster-than-light spaceships is logically the same as the set of purple > > unicorns, but I am not sure if it is pragmatically the same > > The *sets* are the same, but the *property* (ka) of being a u > is not the same as the property of being a ftl-s The sets are the same only on one understanding of what lo'i and le'i mean -- you take them to be extensionally defined, but my inclination would be to take them to be intensionally defined. Since it is easy to express the extensional sense by other means -- da poi ro de go broda gi cmima da -- but hard to express the intensional sense by other means (other than "x1 is intensional-set defined by property x2"), I find the intensional definition preferable. --And.