An approval button is not human-in-the-loop.

Human-in-the-loop is often designed as if the human were a slow service: send request, wait for yes or no, continue the process. It is convenient because it turns human responsibility into a technical branch.

People do not approve abstract states. They judge intent, impact, timing, and risk. If you show an action name and two buttons, you have not brought the human into the process. You have handed them the liability.

A decision without context is not control. It is a coin toss with a user account.

What does the agent want to do? Why is the step necessary now? What happens if I approve? What happens if I reject? If the interface cannot answer those four questions plainly, approval becomes clerical work.

The human does not need every internal thought. Quite the opposite: a good approval compresses. It shows decision-relevant information and leaves the rest where it belongs. Transparency is not a raw-data warehouse.

A team lead may approve a customer concession but not a new bank account. A domain expert can judge factual correctness but not automatically the privacy consequence. Human control is always also a question of authority.

That matters more when agents work across teams. One central approval inbox looks tidy until nobody knows which decision belongs to whom. Governance needs distribution, not visibility alone.

A yes has to continue predictably. A no must not disappear as a technical error. Perhaps the agent needs another route, a follow-up question, or a clean ending. Modelling the wait alone does not create a controlled process.

Time matters too. Some decisions lose their meaning after ten minutes; others can wait a working day. A forgotten approval is not neutral. It is a process that stopped without anybody noticing.

The goal is not to add as many approvals as possible. If people confirm every harmless action, they eventually click through everything. Good control sits at a few well-chosen points and respects the attention of the responsible person.

Human-in-the-loop is not a button set. It is a contract about when machines wait, what information people receive, and what their decision actually changes.