Quote of the day
Advertising is a valuable economic factor because it is the cheapest way of selling goods, particularly if the goods are worthless.
David Ruelle

Born: August 20, 1935 (age 90)
Bio: David Pierre Ruelle is a Belgian-French mathematical physicist. He has worked on statistical physics and dynamical systems. With Floris Takens he coined the term strange attractor, and founded a new theory of turbulence.
Known for:
- Chance and Chaos (1991)
- Thermodynamic formalism (1978)
- The mathematician's brain (2007)
- Chaotic evolution and strange attractors (1989)