 Equivalently, there cannot be a difference in the truth-value of a proposition without a difference in its subject matter. This might consist in (1) an increase or decrease in the population of things that fall within the subject matter; or (2) a shift in the pattern of fundamental properties and relations those things exhibit (Lewis 2001: 612). Now the truth value of “Harry is golden” supervenes upon its subject matter without there needing to be any existing thing distinct from Harry or being golden that necessitates their existence; it is enough that the statement would have been false if Harry had lost his hair or been dyed. So we can avoid contradicting Humeanism by abandoning optimalism in favour of (Subject matter).