(it is Reichenbach's) that all hypotheses of physics are 'in reality', or 'on closer examination' nothing but probability statements (about some average frequencies within sequences of observations which always show deviations from some mean value), or whether we are inclined to make a distinction between two different types of natural laws between the 'deterministic' or 'precision' laws on the one hand, and the 'probability laws' or 'hypotheses of frequency' on the other.