What you are suggesting here, is that the retail store's data collecting and analysis of that data is comparable to collecting and analysis of true random events such as dice rolls. That is not the case, the retail store is conducting a valid study, to attempt to identify trends in fashion, and take advantage of that information. Purchase of clothing is not true randomness, and "trends" can be identified. There is "reason" behind a persons choice of clothing, unlike a dice decision, which is totally random, totally chance. There is a cause and effect in the case of clothing purchases, there is no cause and effect in random events. No useful information can be gained from past events in observing random outcomes. But hope lives eternal, I have been searching for a "hiccup" in random for 50 years.....so far an elusive quest!