Why destructive retries are not supplied for free

A success map $p\mathrm{id}$ does not determine what remains after failure. A destructive Bell test generally changes the unique available radiation state. A failed attempt cannot be retried on the original unknown message without an additional recovery or state-supply assumption.

The coherent amplification programme avoids this issue by preserving all registers until its final test. Its inverse calls, reflections, and retained registers are explicitly charged.