What is AI cognitive debt? When AI makes you calmer, not better.

My mother was an operating theatre nurse. She used to make playlists for surgeons while they cut people open.

She was a Nursing Sister all her life, and eventually moved to the surgical support team. I remember her meticulously curating CDs the night before, having learnt each surgeon's preferences (we did not have wireless or Bluetooth back then). I never understood why, and always worried it would be distracting in such a stressful environment. But she explained that the music didn't make the surgeon better. It made the surgeon calmer while doing what they already knew how to do.

In 1983, four decades before ChatGPT, a UCL researcher named Lisanne Bainbridge published "Ironies of Automation". She warned that when you automate the routine parts of a skilled job, the human is left with only the rare, hard, high-stakes moments, and needs more skill, not less, to handle them. It's one of the most-cited papers in human-machine research: a 40-year-old warning that predicted exactly what is happening to some of us using AI right now.

Here are some frightening examples from medicine:

• Endoscopy: in a 2025 multicentre study, adenoma (polyp) detection rates dropped from about 28% to 22% when AI assistance was withdrawn after a period of routine use. Clinicians got measurably worse at the task and didn't notice the decline in themselves.
• Radiology: a 2023 study found experienced radiologists' accuracy fell from 82% to 45.5% when they were shown incorrect AI suggestions: automation bias overriding trained judgement.

AI doesn't make you a better operator, thinker or writer. It makes the process feel easier.

Whether you keep practising the skill it's standing in for is up to you. The danger isn't the tool. It's that the tool's calming effect gets mistaken for competence, and by the time you find out it isn't, the skill has already eroded, often invisibly, the way it did for the endoscopists.

Everyone tells you AI-assisted work makes you better. The data says it mostly makes you calmer, which is not the same thing. The difference is going to cost some of you your edge, unless you consciously take the reins and don't outsource your thinking.

What this means for your business

If AI is going to take over routine work in your business, the know-how behind that work has to be written down first, while the people who hold it still practise it. Otherwise you automate the task and lose the judgement. The Process Automation X-Ray captures that judgement, step by step, before anything is automated.