There is a characteristic average frequency, such that the relative frequencies in the whole segment, and in almost all long sub segments, will deviate This sentence has been reformulated (without altering its content) in the translation by introducing the concept of a 'fair sample': the original operates only with the definiens of this concept probability only slightly from this average, whilst the relative frequencies of smaller sub segments will deviate further from this average, and the more often, the shorter we choose them.