[ascii_only]

You are confusing complexity with chaotic system. Weather is not more complex system it is just chaotic system so it changes a lot with very small difference in initial parameters. You can make very simple system that you cant predict.It just have to be chaotic. For example double pendulum.

[chr1]

Perhaps i didn't formulate my hypothesis well. What i was trying to say, was that if combination of complexity and chaotic behavior makes the system computationally irreducible (that is any method to compute its future is fully equivalent to that system evolving), then we get an interesting situation when the future is computable but the system can make its own choices, and there are no shortcuts to find what these choices will be.