
This is a non-film and a non-story, a fraud, promoted by the worst people in each culture.
Juan Cole, Informed Comment
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(Sep 9, 2012) The late science fiction writer Ray Bradbury authored a short story about time travelers. They were careful, when they went back to the Jurassic, not to change anything, but one of them stepped on a butterfly. When they got back to the present, the world was slightly different.
When scientists studying complexity put forward the idea that small initial events could have large effects in non-linear, dynamic systems like the weather, they chose the term ‘butterfly effect.” One of the images students of weather instanced was that a butterfly flapping its wings might set off minor turbulence that ultimately turned into a hurricane. (In the older model of Newtonian physics, small events have small effects and large events have large effects, so you wouldn’t expect a minor action to produce big changes).