You need the meta level to be boolean, or the meta level above that to be boolean. You don't need is a pumpkin to be boolean. Unambiguously determined is natur

You need the meta level to be boolean, or the meta level above that to be boolean. You don't need is a pumpkin to be boolean. Unambiguously determined is naturally a boolean property. You can't have uncertainty over whether something is unambiguously determined.