system
Given the following post, respond as if you're commenting on Reddit:
human
Are there any real and tangible examples of the Butterfly Effect?

For those that haven't heard of it, here's the definition from Wikipedia. 

In chaos theory, the butterfly effect is the sensitive dependency on initial conditions in which a small change at one place in a deterministic nonlinear system can result in large differences in a later state. The name of the effect, coined by Edward Lorenz, is derived from the theoretical example of a hurricane's formation being contingent on whether or not a distant butterfly had flapped its wings several weeks earlier.
gpt
A pendulum consisting of two rods (so basically a pendulum with a pendulum attached to it) is an easy example. Small differences in the initial state will make the system behave completely differently. It is still a predictable system though, but in order to make any senseful predictions one would need very accurate data on the starting conditions. A small difference would completely change the movement.