The fundamental basis of science is cause and effect. Every effect has a cause. And therefore, there is no chaos in the universe, simply an inconceivable number of causes.
Chaos theory is not *a* theory, it's a field of study, which, scientifically speaking, is a completely different concept.
From comments on article:
"The chaos theory is a complicated and disputed mathematical theory that seeks to explain the effect of seemingly insignificant factors. The chaos theory name originates from the idea that the theory can give an explanation for chaotic or random occurrences. The first real experiment in the chaos theory was done in 1960 by a meteorologist, Edward Lorenz. He was working with a system of equations to predict what the weather would likely be.
In 1961, he wanted to recreate a past weather sequence, but he began the sequence mid-way and printed out only the first three decimal places instead of the full six. This radically changed the sequence, which could reasonably be assumed to closely mirror the original sequence with only the slight change of three decimal places. However, Lorenz proved that seemingly insignificant factors can have a huge effect on the overall outcome. The chaos theory explores the effects of small occurrences dramatically affecting the outcomes of seemingly unrelated events."