Metacognition — the human divergence & human-as-controller

Where the parallel breaks. Metacognition — thinking about one's own thinking — is a
key point of divergence: humans monitor and regulate their own reasoning in a way
current models largely do not. In practice, many of the largest gains in LLM
performance come not from architectural change but from a human acting as a
metacognitive controller over the system: deciding when to decompose, when to
verify, when to stop. This is the deep reason the human-in-the-loop matters, and it
unifies threads from EB-2 (interactive mode), EB-8 (oversight), and EB-10 (the
human's enduring role in compound and lights-out workflows).