Two propositions are contradictory in the relativistsense only if it is impossible for both to be true relative to the same individual at the same time, not relative to different individuals.
The content expressed by a sentence, individuated at least in part by the subject matter of the sentence and the contents of its subsentential expressions.
relativism(Associated with Protagoras's position)
The doctrine that truth is relative to the individual, culture, or historical context, such that a proposition can be true for one person or framework and false for another
The contrast here with indexicals is apparently quite sharp. If I say “I’m hungry”, and you’re not hungry, you’d never reply to my utterance by saying “No, I’m not hungry”—precisely because it’s obvious that we would not be disagreeing. So again we have a puzzle: a puzzle about how each of our “soup” sentences could express true propositions, despite those propositions contradicting each other. Relativism suggests an answer: these propositions are only true or false relative to individuals. The