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Role: non-rigid: whatever has the role of x is an x in the context - whatever produces such and such manifestation. - Role: whatever >referential/attributive.
Schw I 105
Role/Lewis: only serves to fasten the property in the actual world. - Roles of properties can be exchanged, but not: different-digit relations - not even the roles of mereologically complex or mereologically atomic: they are intrinsic.
Schw I 151 ~
Role: playing such and such role is a contingent property of an event - Martians’ pain/(s) same role, other state.
Die Identität von Körper und Geist Frankfurt 1989
Konventionen Berlin 1975
Philosophical Papers Bd I New York Oxford 1983
Philosophical Papers Bd II New York Oxford 1986
Cl. I. Lewis
Mind and the World Order: Outline of a Theory of Knowledge (Dover Books on Western Philosophy) 1991