I don't understand why you're making this argument. It seems to basically be about the semantics of "deterministic" (or not) when composing different systems, w

I don't understand why you're making this argument. It seems to basically be about the semantics of "deterministic" (or not) when composing different systems, which isn't really relevant to the original point. Just because some macro systems can be non-deterministic doesn't mean they all are. If you have non-deterministic binary inputs to an AND gate, do you really mean to say the AND gate is not deterministic? The statistical effects that reliably turn individual gas molecule motion into PV=nRT, are just as reliable in biochemistry.