The fundamental question here is whether or not you can get identical conditions in the first place. If for example spacetime is quantized, then it might be tha

The fundamental question here is whether or not you can get identical conditions in the first place. If for example spacetime is quantized, then it might be that the basic unit of our reality displays the sort of quantum behavior that makes it so hard to predict outcomes. It wouldn't just be a complex system, it would be an essentially random and ever-changing system. By the same token it could be the opposite, maybe it's just a really complex system as you were speculating about, and while nothing is random, it's essentially impossible to predict. In essence, is this a universe where a version of Maxwell's Daemon could conceivably exist, or is it a universe that even a god-like being would find random? https://en.wikipedia.org/wiki/Maxwell%27s_demon https://en.wikipedia.org/wiki/Maxwell%27s_demon