- Thedivision,betweennon-rigiddesignator,rigiddesignatorandstrongrigiddesignator,associatescloselywithKripke'sdiscussionabouttheconceptofnecessity.Arigiddesignatorofanecessaryexistentcanbecalledstronglyrigid.Thescaleontheconstanttemperaturecontrolleri...
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