(A sequel to the previous post, "What's Up?")
From a search in this journal for "Theories of Truth" —
"According to a platonist about arithmetic,
the truth of the sentence ‘7 is prime’ entails
the existence of an abstract object , the number 7.
This object is abstract because it has no spatial
or temporal location, and is causally inert."
— Alex Miller in the Stanford Encyclopedia of Philosophy
"Causally inert? " . . . See Maori Chess.