I modeled this one day in Excel, using random numbers. In my case, the game was Russian Roulette and the group played it once a year for 20 years. I was very surprised that no matter how many times I refreshed the random results, a large percentage of &#x27;players&#x27; were still playing after 20 rounds.<p>I read this example in a book or article, but I can&#x27;t remember what that was called.