All ski tracks are closely bunched prior to 17 m
Ski tracks are widely spaced after 17 m
¥Positions at bottom of hill are much farther apart than at top of hill.
¥Final positions of skis are very sensitive to their initial positions.
¥If there is uncertainty in initial position, the final position is unpredictable.
¥Example of Chaotic System
¥The Atmosphere is Chaotic!
Lorenz 1993