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Essay ยท The Practical Thinker

AI Is Not the Value. Avoiding Cognitive Debt Is.

AI can help us move faster. The question is whether it helps us avoid solving the wrong thing beautifully.

Drew Bruce June 2026 AI, judgement, work

I was reading a post recently that described cognitive debt as the new technical debt.

That phrase lodged itself in my head, which is always a little dangerous. It usually means I have either found a useful idea, or I am about to spend half an hour staring into space while pretending to make coffee.

But I think there is something in it.

Technical debt is what happens when we ship code faster than we understand the consequences.

Cognitive debt is what happens when we ship thinking faster than we understand the problem.

AI is very good at helping us do that.

It is also very good at helping us avoid it.

That is both its miracle and its trap.

AI is very good at making things look finished.

It is also, if I am honest, not always helping my ADHD. AI can be a fire hydrant of dopamine dressed as a productivity tool. Every half-formed thought bubble can now be followed instantly. What if this became a framework? A diagram? A book? A course? A spreadsheet with conditional formatting and a suspicious amount of personal meaning?

And then, 40 minutes later, I am three browser tabs deep into something that feels important mainly because it is glowing.

Wait. I digress.

Which is, annoyingly, the point.

It can turn a vague idea into a document, a document into a plan, a plan into a set of tasks, and a set of tasks into something that looks suspiciously like progress. Somewhere in that sequence, a project manager feels a warm glow, a software engineer opens another tab, and a meeting gets booked with the word "alignment" in the title.

Which is usually where the trouble starts.

The real value of AI is not that it gives us more output. Most organisations already have more output than they know what to do with. More documents. More dashboards. More slides. More tickets. More strategic priorities, most of which are apparently urgent, critical, foundational, and due by Friday.

The value of AI, when used well, is that it can help us avoid cognitive debt.

A head-shaped filing cabinet packed with warning-marked papers beside an overflowing inbox of mental debt
The problem with cognitive debt is not that the invoice arrives. It is that it arrives looking suspiciously like a perfectly reasonable pile of work.

Cognitive debt is what happens when we keep moving without doing the thinking. We accept the first framing. We solve the visible problem. We optimise the wrong process. We build the platform before understanding the product. We make something faster, cleaner, and more automated, without asking whether it should exist in the first place.

In other words: we become extremely efficient at being wrong.

This matters especially for new software engineers. The temptation is to think the platform is the work. The framework. The cloud service. The language. The architecture diagram with boxes that multiply if you leave them alone overnight.

But the product is the work.

The platform is a tool. A powerful tool, yes. Sometimes an expensive tool. Occasionally a tool that requires three certifications and a Slack channel named after it. But still a tool.

A good engineer asks: What is the user trying to do? What behaviour are we changing? What problem are we actually solving? What would make this simpler? What would make it safer? What would make it unnecessary?

AI can help with that.

It can also help you avoid asking.

That is the uncomfortable bit.

Technology is never just "a tool" in the harmless sense. A hammer does not send calendar invitations. A saw does not rewrite your job description while telling you it is here to empower you. AI tools change what feels easy, what gets rewarded, and what people stop practising.

So yes, we have agency.

But we only have agency if we use it.

A split office and workshop scene with a polished laptop dashboard on one side and a pipe drip being tested beside a carpenter square on the other
A leaking pipe has the courtesy to be obvious. A bad strategy may arrive in a font that makes everyone feel safer than they should.

That is why knowledge workers talk about AI constantly, while plumbers and carpenters may be less impressed. Not because trades are simple. Quite the opposite. A plumber knows very quickly whether the pipe still leaks. A carpenter knows whether the frame is square. Reality has a way of marking the work.

Knowledge work is slipperier.

A bad strategy can look elegant. A weak argument can look polished. A half-understood legal summary can look confident. A medical suggestion can sound plausible. A product plan can read beautifully while quietly solving the wrong problem.

This is why doctors, lawyers, accountants, engineers, teachers, and other professional groups will not simply be replaced by "the AI answer". Not neatly. Not responsibly. In many fields, the future is likely to involve AI doing more of the first-pass work, while humans remain accountable for judgement, sign-off, ethics, and consequences.

The guilds will matter. Associations will matter. Boards of practice will matter. Unions may matter more than people expect. Not just as defensive walls, but as mechanisms for forcing agency back into the system.

Because someone has to be responsible.

Not vaguely responsible. Not "the model said it". Not "the workflow generated it". Not "we assumed the output had been reviewed because it was in a professionally formatted PDF".

Someone has to know enough to say: hang on.

That is where age and experience become interesting.

The obvious story is that younger workers will gain the most from AI because they can move faster. There is truth in that. Some evidence suggests less experienced workers can get substantial productivity benefits from generative AI, especially where the work is bounded and the feedback loop is clear.

But looking faster is not the same as thinking better.

Experience gives you a different advantage. You have seen the shape of wrongness before. You know when the answer is too neat. You know when the question has been framed badly. You know when the team is solving the platform because the product is politically awkward. You know when the beautifully structured recommendation has quietly ignored the customer, the constraint, the law, the budget, or the human being who has to use the thing on a wet Tuesday afternoon.

AI is useful to the inexperienced because it helps them move.

AI is useful to the experienced because it gives them something to push against.

That distinction matters.

The future will not belong to people who merely use AI. That bar is already too low. The future belongs to people who can use AI without outsourcing their judgement to it.

People who can ask better questions.

People who can spot cognitive debt early.

People who can look at a polished answer and say, gently but firmly:

Well, that looks impressive.

What problem is it actually solving?

Source notes

A few useful anchors behind the piece, included lightly because this is a blog post and not a working paper wearing a lanyard.