 The stimulating power of coffee, for instance, is a disposition constituted by a complex causal network consisting of: (i) stimuli, such as the variable amounts of coffee ingested; and (ii) responses, such as the resulting changes in energy, attention, anxiety, or irritation. These stimuli and responses are mediated by: (iii) attendant circumstances, such as a drinker’s fatigue at the time of ingestion, the absorptive rate of their stomach, or the constitution of their nervous system; and (iv) the basis of the disposition, such as the chemical composition of the coffee or the soil conditions where it was grown. The responses, then, are a function of the stimuli, attendant circumstances, and basis, and one who specifies these and who specifies in detail their correlation “has said all about the disposition that there is to say” (1944, 51).