 Here the strategy prescribes a response to the moves by Opponent depending on the internal detail of the latter’s behavior. The response prescribed to Proponent by the strategy to the initial question should not depend on what happens between the Proponent’s question \(?_1\) and the Opponent’s answer \({\textit{tt}}\). This is the property of innocence, that limits the amount of detail that a strategy for \(P\) can access. For this reason, failure of innocence allows strategies to model storage phenomena.