¥Mostly because of the nonlinearity of the equations, small
differences in the initial state eventually grow to
completely change the solution.
¥"Does the Flap of a Butterfly's Wings in Brazil Set Off a Tornado in
Texas? " (E. Lorenz, 1972, via P. Merilees or D.
Lilly)
¥Do multiple simulations starting from slightly different initial
states: ensemble prediction
¥Also create ensembles by using multiple models.