However, as systems get EVEN MORE complex than that, predictable and coherent behavior returns. Weather has trillions of variable axioms, and yet, at least in the short range, it can be predicted fairly well based not off of theoretical models, but based off of learned past behavior. The human body is, from some aspects, even more complex than the weather, but it also has lots of understandable and predictable behaviors.
Right now, I've just encountered one of the least pleasant, but most reassuring ones: the catastrophic intestinal pain and distress associated with my body finally shaking off illness. I've been sick as a dead dog since late Friday, and here we are, closing in on late Wednesday, and I only feel a 'bit' better. However, it's definitely on the downward (upward? whatever) slope, and I can feel my body recovering, and right now my body is going through the "blood pressure / serious water shortage / monocyte-flush / damaged-cell-flush" process all at the same time. I feel dizzy, and cold, and sweaty, and my guts are killing me, but I know what this means, because ordered behavior results from insanely complex behavior.
My body has lots of other quirks and tricks and wierd behaviors, and I've gotten good at interpreting them. As I find more, I'll post them here.