TIL There are consumers who are known as Harbingers of Failure. They have a knack for buying products that turn out to be market flops. "when the harbingers buy a product at least three times, it’s really bad news: The probability of success for that product drops 56 percent."

https://news.mit.edu/2015/harbinger-failure-consumers-unpopular-products-1223

https://www.reddit.com/r/todayilearned/comments/150q89x/til_there_are_consumers_who_are_known_as/