THEBONUSBUYSLOTS

Probabilities shift as the number of purchases grows, and not in the direction most people hope. With a 35 percent chance of profit per round, the likelihood that at least one of ten buys wins is about 99 percent, yet the likelihood that the ten together finish ahead is well under half and keeps falling as more rounds are added. Thinking about bonus buy slots odds of winning at the session level rather than the single-round level reveals that persistence does not improve the picture.