Editing New riddle of induction (section)

===Swinburne===
[[Richard Swinburne]] gets past the objection that green may be redefined in terms of ''grue'' and ''bleen'' by making a distinction based on how we test for the applicability of a predicate in a particular case. He distinguishes between qualitative and locational predicates. Qualitative predicates, like green, ''can'' be assessed without knowing the spatial or temporal relation of ''x'' to a particular time, place or event. Locational predicates, like ''grue'', ''cannot'' be assessed without knowing the spatial or temporal relation of ''x'' to a particular time, place or event, in this case whether ''x'' is being observed before or after time ''t''. Although green can be given a definition in terms of the locational predicates ''grue'' and ''bleen'', this is irrelevant to the fact that green meets the criterion for being a qualitative predicate whereas ''grue'' is merely locational. He concludes that if some ''x'''s under examination—like emeralds—satisfy both a qualitative and a locational predicate, but projecting these two predicates yields conflicting predictions, namely, whether emeralds examined after time ''t'' shall appear grue or green, we should project the qualitative predicate, in this case green.<ref>R. G. Swinburne, 'Grue', Analysis, Vol. 28, No. 4 (March 1968), pp. 123-128.</ref>