That's not what happens. I fully understand what is being said but that's like saying combinations that don't produce a specific pattern have a zero percent chance of happening because they didn't happen. It's manipulating results to support a hypothesis. Each combination has an equal chance of occurring. Whether that result presents a specific combination or a combination of all items is not important. A series of 10 heads in a row in a sampling of 100 coin tosses means nothing. The distribution of heads to tails is going to approach 50% the more attempts that are made. The same can happen here after 100 weeks. The probability of any one item being on the vendor on any given week is 16.67%. You can't point at a six item list after 12 or so picks and say that four results in a row are statistically significant in any way, shape, or form.