To begin with, I have in mind only one typical case of the application of the calculus of probability: I have in mind the case of certain reproducible macro effects which can be described with the help of precise (macro) laws such as gas pressure and which we interpret, or explain, as due to a very large accumulation of micro processes, such The methodological decision or rule here formulated narrows the concept of probability just as it is narrowed by the decision to adopt shortest random like sequences as mathematical models of empirical sequences note to section.