Clockwork & Fractal

The people in medieval era think of universe as like clockwork, machinery structured.
Thus, everything is programmed and predetermined. Pierre-Simon Laplace said;

We may regard the present state of the universe as the effect of its past and the cause of its future. An intellect which at a certain moment would know all forces that set nature in motion, and all positions of all items of which nature is composed, if this intellect were also vast enough to submit these data to analysis, it would embrace in a single formula the movements of the greatest bodies of the universe and those of the tiniest atom; for such an intellect nothing would be uncertain and the future just like the past would be present before its eyes.

(1814)

The recent science follows a different theory, that is chaos theory.
In chaos theory, the world DOES have order, which is the loop of cause and effect, or feedback.
However, a tiny error or difference causes huge effects in this loop, and these errors occurs irregularly.
Thus, the world has a pattern, but at the same time, totally unpredictable.