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The Honest Case For A Human Checkpoint On Anything Irreversible

By Nigel Guy · 2 min read

Most AI-assisted work is low-friction by design, and that low friction is exactly the point most of the time — draft, review, adjust, repeat, at a speed that would have been impossible before. The problem is that the rhythm doesn't come with a built-in warning label when the next action stops being reversible. The email sends. The record deletes. The trade executes. You were moving at draft-speed and the thing that happened wasn't a draft.

The rule: anything irreversible gets a deliberate human pause before it happens, regardless of how routine or low-stakes the step felt a moment earlier.

The mechanism: the reversibility test

Question If the answer is concerning
Can this be undone at all? If no, that alone is your checkpoint trigger.
What does undoing it cost — time, money, trust, an apology owed? If the cost is nonzero and more than trivial, it needs a pause.
Who else does this affect once it's done? Anyone outside your own workspace raises the bar.
Is this the first time this particular action has run, or the hundredth? Novel or unusual actions deserve more scrutiny than routine ones.
  1. Run the test before the action, not after. The test is only useful ahead of the send button, not as a post-mortem tool.
  2. Make the checkpoint an actual separate look, not a "yes/confirm" click inside the same flow you were already in. A checkpoint that's one motion away from the action you're checking isn't a pause, it's theatre.
  3. Have a human do the checking, not the same AI tool that produced the thing being checked. Asking a model "are you sure about this?" is asking it to grade its own homework, and it will often say yes with exactly the same fluent confidence as the original output.
  4. Widen the pause for anything affecting someone who didn't get a say — a client, a colleague, a member of the public. Reversibility to you isn't the same as reversibility to them.

What to skip

Skip building a checkpoint for every single AI-assisted action regardless of stakes — that just trains people to click through it without reading, which is worse than no checkpoint at all, because it manufactures false confidence. Skip, too, treating "I usually catch mistakes before they matter" as a substitute for an actual pause; the whole reason this matters is the one time that habit fails.

Guardrails

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