 The implausibility of Strong Conceptual may explain why two of the most influential philosophers who discussed supervenience in ethics —R. M. Hare (1984, 4) and Simon Blackburn (cf. 1985, 134, and the contrast between ‘supervenience’ and ‘necessity’ in 1984, 183–4.)—seemed to accept something like weak but not strong conceptual supervenience of the ethical.