Two corrections to a purely verbal causal account

First, placing the query event later does not by itself make its value unpredictable. A common random seed can correlate a late-generated query with an earlier encoder. Freshness is therefore an independent hypothesis.

Second, counting only systems whose marginals depend on the input is insufficient. An apparently input-independent ancillary marginal can participate in input-dependent joint correlations. The complete accessible joint state is the capacity object.

boundary. All positive conclusions are analytical and conditional on the printed hypotheses. No physical implementation, software compilation, LaTeX build, exhaustive execution, calibration, or machine-checked proof is asserted.