 Fisch and Turquette, upon the discovery of Peirce’s notes on triadic logic, locate the root of indeterminacy in potentiality. That is, indeterminacy is the semantic value assigned to an unrealized situation; hence, we can say neither “S is P” nor “S is not P” at this point. Potentiality, according to this view, cannot be captured by dyadic logic. If so, Peirce’s triadic logic is directly related to modality talk, which Fisch and Turquette conclude: