<P> The term itself was coined by Edward Lorenz , and is derived from the metaphorical example of the details of a tornado ( 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 . Lorenz discovered the effect when he observed that runs of his weather model with initial condition data that was rounded in a seemingly inconsequential manner would fail to reproduce the results of runs with the unrounded initial condition data . A very small change in initial conditions had created a significantly different outcome . </P>
<P> The term itself was coined by Edward Lorenz , and is derived from the metaphorical example of the details of a tornado ( 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 . Lorenz discovered the effect when he observed that runs of his weather model with initial condition data that was rounded in a seemingly inconsequential manner would fail to reproduce the results of runs with the unrounded initial condition data . A very small change in initial conditions had created a significantly different outcome . </P>
who came up with the butterfly effect theory
who came up with the butterfly effect theory
Edward Lorenz
Edward Lorenz