[doug_durham]

Non-deterministic doesn't mean random. Random means random. Non-deterministic means that specific inputs don't generate the same outputs. It says nothing about the distribution of the output values. A chaotic system isn't random, its just non-deterministic.

[dragonwriter]

“Nondeternimism” gets used jn a variety of ways both from differing context and conflicting uses in the same context, but chaotic systems are fully deterministic in the most common relevant sense, but highly sensitive to inputs, resulting in even very small uncertainty in inputs to render them largely unpredictable.