Alice and Bob
Suppose there is a society "N" consisting of two or more individuals and a set "X" of two or more social outcomes. (For example, in the Alice and Bob case, "N" consisted of Alice and Bob, and "X" consisted of the four color options ⟨Blue, Yellow⟩, ⟨Blue, Green⟩, ⟨Red, Yellow⟩, and ⟨Red, Green⟩.)