According to a later account, which Searle presents in "Intentionality" (1983) and which differs in important ways from the one suggested in "Speech Acts", illocutionary acts are characterised by their having "conditions of satisfaction" (an idea adopted from Strawson's 1971 paper "Meaning and Truth") and a "direction of fit" (an idea adopted from Austin and Elizabeth Anscombe). For example, the statement "John bought two candy bars" is satisfied if and only if it is true, i.e. John did buy two candy bars. By contrast, the command "John, buy two candy bars!" is satisfied if and only if John carries out the action of purchasing two candy bars. Searle refers to the first as having the "word-to-world" direction of fit, since the words are supposed to change to accurately represent the world, and the second as having the "world-to-word" direction of fit, since the world is supposed to change to match the words. (There is also the double direction of fit, in which the relationship goes both ways, and the null or zero direction of fit, in which it goes neither way because the propositional content is presupposed, as in "I'm sorry I ate John's candy bars.")