Isn't that around the top of the statistics no-nos list? Probability theory in general? Predicting individual result based on the whole sample base? It was long ago and I am not in this field at all but my recollection tells me that it was mentioned in the beginning of the first class of probability theory 101.
No, it's the opposite. The sample space measurement gives you the probability of an individual selected item. This is the fundamental reason why probabily works.
Isn't that around the top of the statistics no-nos list? Probability theory in general? Predicting individual result based on the whole sample base? It was long ago and I am not in this field at all but my recollection tells me that it was mentioned in the beginning of the first class of probability theory 101.