It is said that what happens in a chaotic system cannot usually be calculated.
That it's probably right.
But: chaotic systems consist of substances.
All substances run according to laws.
The definition for laws is: Identical substances under identical circumstances always give an identical result (or not expressed quite exactly: same substances under the same conditions always result in the same).
Conclusion: because you cannot calculate something due to infinite interactions, it does not mean that everything does not follow the law.
So, you don't have to be able to calculate everything. It is only important that you know that everything consists of substances that work according to the law - in order to realize that chaos is also in order.
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