Non-explicable? It's deterministic in that (input A, state B) always produces output C. But it can't generally be reasoned about, in terms of how much change t

Non-explicable? It's deterministic in that (input A, state B) always produces output C. But it can't generally be reasoned about, in terms of how much change to A will produce C+1, nor can you directly apply mechanical reasoning to /why/ (A.B) produces C and get a meaningful answer. (Yes, I know, "the inputs multiplied by the weights", but I'm talking about what /meaning/ someone might ascribe to certain weights being valued X, Y or Z in the same sense as you'd look at a variable in a running program or a physical property of a mechanical system).