Though generations of schoolchildren have cursed arithmetic, the world was a much more inconvenient place without it. Before the advent of modern arithmetic in the 13th century, basic calculations ...

The chambers in this nautilus shell graduate at a rate of 1.618, a number defined as a divine proportion since ancient times. Because pleasing proportions don't just happen, borrowing a few pointers ...

When, as a young trainee in a London dealing room, I was first introduced to Fibonacci numbers I was, as are most people, skeptical. The analysis consists of calculating significant levels based on a ...