For decades, Excel worked on a simple principle: you enter a formula into one cell, and it returns a single result into that ...

Deciding whether to take a $400,000 lump sum or monthly pension benefit of $2,000 requires calculating the relative value of each option. Generally speaking, the sooner you can receive the lump sum, ...

Chess, a zero-sum game, here seen played at a strategy session at Camp David in 1978 between the Israeli prime minister and the US National Security Advisor. The concept of zero-sum thinking ...