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Accuracy and trust

What should always wait for a person to approve it

Anything that sends, spends or deletes. Those are the three actions a business cannot take back, so those are the three that wait for a human being, and everything that leads up to them can run on its own. It is a crude rule and it holds up better than the sophisticated ones.

Last checked 20 September 2026

The rule, and why it is drawn there #

What those three have in common is not risk in the abstract. It is that the damage happens at the moment of the action and cannot be undone by noticing afterwards. A wrong draft sitting in a queue costs nothing. The same draft in a client's inbox has already done whatever it was going to do, and the rest is apology.

Everything before that point is reversible by definition. Reading, finding, matching, sorting, extracting, summarising, preparing. Those can run unattended all night, and for most businesses that is where the hours actually are, which is the point made in which jobs are worth automating.

This is our own rule, not a general disclaimer #

We hold this line in the work we do, and we say it early because it changes what a project looks like. It means we will not build the thing that emails your customers on its own, however confident anyone is about the quality of the drafts, and however much more impressive the demo would be.

The reason is in how these systems fail. They produce plausible output whether or not it is correct, so nothing in the artefact tells you which kind you have. That is set out with the regulator's own wording in what happens when AI gets it wrong. A rule that depends on spotting bad output is not a rule. A rule that puts a person in front of the irreversible step works whether or not anybody spots anything.

Where the line falls in practice #

Runs unattended

  • Reading the inbox and sorting what arrived
  • Pulling the figures together and preparing an invoice
  • Spotting that a certificate or deadline is due
  • Drafting the note, the summary or the letter
  • Flagging records that look duplicated or stale
  • Ranking a list by whatever rule you agreed

Waits for a person

  • Replying to any of it
  • Issuing it, and anything that takes payment
  • Telling the customer their appointment has moved
  • Sending it, filing it as the record, or acting on it
  • Deleting or merging any of them
  • Rejecting a person, or telling them they were rejected

The last line on each side is a different kind of case from the rest, and worth separating out.

The category the law treats separately #

Most of this page is judgement. One part of it is not. Where a decision is based solely on automated processing and produces legal effects or similarly significantly affects someone, UK GDPR gives the individual the right not to be subject to it, permits it only in narrow circumstances, and requires safeguards.

The ICO describes those safeguards as including the ability to obtain human intervention, express a point of view, and obtain an explanation of the decision and challenge it. A data protection impact assessment is expected as well.

In a business this catches fewer things than people fear and more than they expect. Deciding who gets an interview, who is declined, what someone is charged, or whether an application proceeds all have the right shape. Drafting a reply about any of those does not. Whether your own process is caught is a judgement your business has to make and be able to show, and the assessment question is covered in do you need a DPIA.

A check that people actually perform #

Four things keep a check real.

  • Show the working

    The draft next to the record it came from, so checking means comparing rather than trusting.

  • Keep the volume readable

    If the only way through the queue is bulk approval, the design is wrong, not the person.

  • Make rejection cheap

    If sending something back is fiddly and approving is one click, you have built a machine that produces approvals.

  • Give it to someone by name

    Shared responsibility for a check reliably becomes nobody's.

One more, less obvious: watch the rejection rate. A queue where nothing is ever sent back is either genuinely excellent or no longer being read, and those two look identical from the outside. Knowing which is worth a deliberate spot check now and then.

What this costs you, honestly #

It costs the fantasy version, where the business runs itself overnight and everyone arrives to find the work done. That version is what gets sold and it is not what gets delivered well.

What it does not cost is the benefit. The expensive part of most repeated admin is the gathering: opening five systems, finding the right record, working out what stage something is at, assembling the facts. Approving prepared work is a fundamentally different task from producing it, even though both end in a click. The cost of admin time calculator counts the hours currently going into that gathering, which is the number worth knowing before anyone designs anything.

Questions people ask

What should never run without a person approving it?
Anything that sends, spends or deletes. A message that leaves the building, money that moves, and data that stops existing are the three actions you cannot take back, so they are the three that wait for a human being. Everything upstream of those can run on its own.
Does keeping a person in the loop defeat the point of automating?
No, because the cost of most repeated jobs is in the finding, gathering and drafting rather than the deciding. A person approving twenty prepared items in a few minutes is doing a different job from a person preparing twenty items from scratch, even though both end with the same click.
Is a human check required by law?
For most business automation, no. But where a decision is based solely on automated processing and has a legal or similarly significant effect on someone, UK GDPR restricts it and requires safeguards, including the ability for the person to obtain human intervention and challenge the decision. Your business must satisfy itself where its own processes sit.
How do we stop the check becoming a rubber stamp?
Show the person what they are approving next to the source it came from, keep the volume low enough to read, and make sure rejecting something is as easy as accepting it. A queue that can only realistically be approved in bulk has already stopped being a check.

Where these numbers come from

  1. ICO, Rights related to automated decision making including profiling , read 20 September 2026 . Article 22 gives people the right not to be subject to a decision based solely on automated processing producing legal or similarly significant effects, with narrow exceptions and required safeguards.
  2. ICO, What do we need to know about accuracy and statistical accuracy? , read 20 September 2026 . Advises treating AI outputs as statistically informed guesses rather than facts, and keeping records that say so.

Last checked 20 September 2026.

Our workings are on the methodology page .

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