2 links have been added on this idea.
  1. Interesting, from Quora:
    “The mathematical version of the butterfly effect is easy to test. Some mathematical systems are chaotic and a trivial change in initial conditions will lead to large changes in the result. An example is the logistic difference equation

    xn+1=rxn(1−xn)

    In physical systems, the double pendulum is an example of a chaotic system, and very small changes in initial conditions lead to large changes in behavior.”