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If every observed emerald is green, and if this supports the conclusion All emeralds are green, does it equally support the conclusion All emeralds are grue - where grue is defined as green before a certain date and blue thereafter?

Produktbeschreibung
If every observed emerald is green, and if this supports the conclusion All emeralds are green, does it equally support the conclusion All emeralds are grue - where grue is defined as green before a certain date and blue thereafter?