I just studied Putnams "Meaning and Reference" (http://home.sandiego.edu/~baber/analytic/Putnam1973.pdf)
Then he talks about indexicality . What exactly does it mean when we say that a word, or some kind of expression is 'indexical'?
"In this paper, our interest is in theory of meaning, however, and not in theory of necessary truth. Words like 'now', 'this', 'here' have long been recognized to be indexical, or token-reflexive -i.e., to have an extension which varies from context to context or token to token. For these words, no one has ever suggested the traditional theory that "intension determines extension."
Can somebody clarify this?