Buy now to get the insights from Kit Yates's The Math of Life and Death.

Sample Insights:

1) Pyramid schemes rely on investors recruiting multiple people to make money for everyone who enrolls in them. For a pyramid scheme to pay all its members, it would have to keep recruiting people indefinitely.

2) Pyramid schemes inevitably collapse because eventually there will be no people left to recruit. The number of new investors needed at each level increases in proportion to the number of people in the scheme. This rapid growth phenomenon is known as exponential growth.