The lowest-priced item that has been used or worn previously.The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a display model or store return that has been used.See details for description of any imperfections.
A collection of articles, currently running in the New Scientist , on the theory and application of chaos from economics to animal behaviour. The articles featured include those by Ian Stewart, author of Does God Play Dice? , Franco Vivaldi and Benoit Mandelbrot.