Verification

more like them than they were

Every test of whether a reconstruction *is* someone really measures whether it *behaves* like them. That second question gets easier to pass the more material you have — which is why the imitation can score highest exactly where it has drifted furthest.

the gate read what the gate changed

The gate that fixes its input changes what the next gate sees. The summary that replaces the thing it summarized becomes the thing verified.