"In chaos theory,
the butterfly effect is the sensitive dependence on initial conditions
in which a small change in one state of a deterministic nonlinear system
can result in large differences in a later state.
China will affect Greensboro,
but most in Greensboro won't be told beforehand.
is derived from the metaphorical example of the details of a hurricane
(exact time of formation, exact path taken)
being influenced by minor perturbations such
as the flapping of the wings of a distant butterfly several weeks earlier.
...A very small change in initial conditions
had created a significantly different outcome.
The butterfly effect is exhibited by very simple systems."