Information and Causality in Promise Theory

Abstract: The explicit link between Promise Theory and Information Theory, while perhaps obvious, is laid out explicitly here. It's shown how causally related observations of promised behaviours relate to the probabilistic formulation of causal information in Shannon's theory, and thus clarify the meaning of autonomy or causal independence, and further the connection between information and causal sets. Promise Theory helps to make clear a number of assumptions which are commonly taken for granted in causal descriptions. The concept of a promise is hard to escape. It serves as proxy for intent, whether a priori or by inference, and it is intrinsic to the interpretations of observations in the latter.