Abstract
This chapter contains sections titled: Characters are identical only if they are indiscriminable under all presentations. A positive condition is derived on the relation in which two experiences stand when they have the same phenomenal character. This chapter shows that the condition is satisfied, but by more than one relation. The first section develops the technical concept of a maximal M‐relation, and shows the content of phenomenal character to be precisely that sameness in character is a maximal _M_‐relation. The second section discusses the question, and dismisses the somewhat different idea that characters might be vague objects. The third section compares this account of sameness in character with the common suggestion that experiences have the same character just in case they match the same experiences. This chapter leaves the choice of ignorance or indeterminacy open.