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Moral/Aesthetics/Chalmers: it is often said that there is no conceptual connection between physical properties and moral or aesthetic properties. This does not mean, however, that moral and aesthetic properties are as problematic as conscious experiences.
1. Is a possible world conceivable, which is physically indistinguishable from ours, but morally different?
2. Are moral facts not phenomena that impose themselves upon us? We can deny them. This is done by moral antirealists such as Blackburn (1971) and Hare (1984).
Moral/Supervenience/Boyd/Brink/Chalmers: Boyd (1988) and Brink (1989) Thesis: moral facts supervene on natural facts with an a posteriori necessity. That is, they suprvene on the secondary, not the primary, intension of moral concepts. (> Horgan and Timmons, 1992a, 1992b).
The Conscious Mind Oxford New York 1996
Constructing the World Oxford 2014