Keep the Tension That Builds You

In the age of AI, the work worth keeping is the work that lets you catch the machine when it's wrong.

Every forecast about AI focuses on its impact on jobs. But what’s it doing to you right now, while you still have a job and things seem fine?

I’m training for a powerlifting meet. A phrase I keep thinking about? Time under tension. It’s simple: muscles grow when they’re under load. Take the load off, and they start to degrade, slowly, without warning. It isn’t instant, but the minute you stop pushing, it begins.

You got good at your work the same way, even if no one called it training. The bad first drafts. The ticket you wrestled with for two days before it finally gave. Sitting with a problem long enough that you stopped being scared of it. Those hours made you who you are today. Growth was the tax we paid for having no shortcut.

When the shortcut arrived, the work didn’t go away, but much of it became optional. Everything that used to be forced on you must now be opted into. But we are seeing a lot of people don’t opt in because there’s no ache from a rep you never did. You just feel faster. And faster feels like progress.

Maybe, for a while, you can’t tell the difference. And maybe, neither can anyone else. The output stops telling you who did the thinking. The person still does the hard reasoning, and the person who quietly handed it over turns in work that reads the same on the page. So the signal you used to take off someone’s output, the one that told you who was actually sharp, stops working. Everyone looks capable.

But that doesn’t last.

What’s come apart underneath is capability and output, and your job only measures one of them. The person who kept the load can still work when the machine is wrong. They can catch it in the moments it’s confidently and sometimes fluently wrong. The person who let the load go can only supervise. And supervising a system you can no longer out-think isn’t oversight. It’s trust with a manager’s title. One side keeps compounding. The other plateaus and calls it seniority.

You won’t know which one you became until the day it matters, and by then it’s already set. There’s no cramming years of skipped reps when the gap finally surfaces. The choice is being made now, in a hundred forgettable moments where you let the machine take the tension off, and the bill for those moments doesn’t arrive for years.

None of this is nostalgia, and I’m not afraid of the tools. In fact, I have embraced them wholeheartedly. Handing work to machines is the whole story of how work has ever moved: the calculator, the compiler, the search bar. Nobody is a better thinker for only doing long division by hand. The question has never been whether to use the machine. It was which work to keep, now that keeping any of it is finally up to you.

And there is a test for that. The weight worth keeping is the weight that builds the judgment you’ll need to supervise the machine you’re handing the work to. That’s the whole filter. Some of what you do all day is hauling, and you should automate it without a flicker of guilt. But some of it is the exact rep that lets you catch the machine when it’s wrong — usually the slow, irritating, judgment-shaped part. Keep that one. Let the rest go.

I came up in threat hunting, and the discipline is almost a proof of this. Hunting only exists because the automated layer isn’t enough, because the confident alert and the confident silence are both, sometimes, wrong. What makes a hunter is years of reps that don’t obviously pay off: staring at ordinary logs until the one thing that doesn’t belong finally lifts off the page. That instinct can’t be handed to you. It’s the judgment that lets you stand over an automated system and say, quietly, that’s wrong. Which is exactly the weight worth keeping. Everything that builds it, you protect. Everything that doesn’t, the machine can have.

In practice, this comes down to smaller things than it sounds. Mostly it’s about order.

Do the rep before you ask the machine: write your own version first, even a rough one, then hand it over and tell it to tear the thing apart. Go to the machine first, and you spend the day editing its thinking instead of building your own; go to yourself first, and it becomes the thing that checks your work, which is a completely different job for your brain and a completely different you a year out. And set the tool up to put strain on you rather than take it off. Ask it to hold its answer and quiz you instead. Tell it to argue the other side and go hunting for the weak joint in your reasoning. Guess what it’s going to say before you let it speak, and pay attention to the gap. Same tool either way. Whether it ends up a coach or a crutch is entirely a function of what you asked it for.

But the individual version of this is the small version, and I’ve come to think it isn’t even the one that matters most. Because the same thing is happening to organizations, and almost nobody is pricing it in.

Every company automating its grunt work is also switching off the machine that produced its own experts. The senior people it leans on, the ones whose judgment everyone trusts, were built by exactly the kind of work the next round of hires will never touch. The on-ramp and the drudgery were one and the same. Automate the drudgery, and you don’t just lose the busywork. You quietly remove the bottom two rungs of the ladder that turned juniors into the people you can’t operate without.

The entry-level work that used to forge an analyst, the slow reps that built the instinct, is the most automatable work we own. Every efficiency we take, seen from the other side, is a rep we are removing from someone who still needs it. That’s not an argument against the efficiency. It’s an argument that the reps now have to be put back on purpose, because the work will no longer install them by accident.

So the principle scales without changing shape. The weight worth keeping for a person or an organization is the one that builds the judgment you’ll need to supervise the machine you’re handing the work to. For you, that’s staying sharp enough to catch confident wrongness. For the org, it’s deliberately manufacturing the reps that used to happen on their own, so that ten years from now, the bottleneck won’t be the machines. It’ll be finding anyone who can still do the building. The companies that come through this are the ones treating it like a training program right now, while the old one is still warm, instead of assuming the work will keep forging people the way it always has.

Time under tension didn’t die with the old workflow. The load still builds you, exactly the way it built everyone who came before you. The only thing that changed is that staying under it is now a decision, and most people are making that decision every day without realizing there was one to make.

So choose your weights and reps on purpose. The ones who don’t will never feel the moment they stopped growing. They’ll glance up one ordinary afternoon and find the work has moved somewhere they can’t follow. And they’ve been standing in the same place the whole time it left.