 The transition from the natural language of action to the institutional language of action is a gradual process dictated by the need to analyze natural signs. As Condillac explains, there is no succession of various ideas in the mind of the speaker of the natural language of action: the idea of the external object affecting him or her, a judgment about the object, and the passions it arouses occur more or less at the same time. In a similar fashion their visible and audible natural signs (the gestures, facial expressions, and cries made) occur more or less at the same time, although the beginning of a decomposition of these signs is already prompted by the mere spatio-temporal constraints of any visible action: it takes some time to jump around or to extend one own’s arm. Let’s imagine a situation in which we have a speaker of the natural language and its first interpreter. In the presence of an animal, previously experienced as dangerous, the speaker goes into a fright. The action that follows appears to be confused to the interpreter, since it is the immediate expression of a variety of ideas all occurring at the same time in the mind of the speaker. The desire to understand leads the interpreter to the beginning of an analysis of the action and, as a consequence, to an analysis of ideas: for example, the attention of the interpreter is drawn first to the object pointed at by the speaker’s finger and then to speaker’s face expressing fear. The related ideas that were simultaneous in the mind of the speaker become successive for the interpreter. The success and failure of the interpreter incites the speaker to be clear to herself and to others: the speaker is motivated to analyze her own ideas so that she may break down the corresponding visible and audible signs and be better understood. This breaking down of signs makes the job easier for the interpreter who in her turn replies by decomposing her own gestures in accordance with the analysis of ideas. This gradual process of decomposition or articulation of gestures, cries, and facial expressions marks the passage from a natural language of action to an institutional language of action (Grammar I.1 &amp; I.7, Logic II.2).