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Beyond its epistemological function, can we consider that theory has an axiological function? This question deals, amongst other issues, with the value of theory as theory, insofar as it has a social role on which its autonomy is based. What happens when a woman, who is a media semiotics professor, kills for theory? This question dramatizes the statements, but also refers to ordinary practical communication. Indeed, this murder story is the theme of A Space Oddity, episode 20, season 9 of the TV series Crime Scene Investigation: Las Vegas.