bivalence, n.All

Bivalence (n.) in ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠'the proposition is either true or false' only means it must be possible to decide for or against it — not what the ground of that decision is like.