What is a pyramid scheme exactly? Find out at http://www.investopedia.com/articles/04/042104.asp. Have you ever participated in or invested in such a scheme? Have you ever been a victim of one? Research and discuss this topic in this part of your project. According to the Investopedia article, why can it be difficult to detect a pyramid scheme? What are some possible tip-offs to this kind of fraud? Why are pyramid schemes unsustainable? Who are the victims? Provide a diagram illustrating the dynamics of pyramid schemes.