Comment by nemaar

I believe you are mixing things up. A chaotic system IS deterministic, it is just really hard to predict what it will do. The fact that we (or anyone) cannot predict what will happen in our world says nothing about it being deterministic. If you are talking about practical determinism only then yes, you are most likely correct and we'll never be able to predict the future. But it is misleading and incorrect to say that the world is not deterministic just because we cannot predict its behavior.