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Robots Ace Chess but Can't Fold Your Laundry. Meet Moravec's Paradox.
Robotics

Robots Ace Chess but Can't Fold Your Laundry. Meet Moravec's Paradox.

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English

We assumed the hard stuff for machines would be the hard stuff for us: logic, maths, strategy. It turned out to be the exact opposite. The things a toddler does without thinking are the things that still defeat the world's best robots.

The tuput Editors · · 4 min read

A computer beat the world chess champion in 1997. Nearly thirty years later, no robot on Earth can reliably walk into an unfamiliar kitchen and make you a cup of tea.

Read that again, because the result is strange. The thing we consider the pinnacle of human intellect, grandmaster chess, fell to machines decades ago. The thing we don’t even think of as a skill (picking up a mug, filling a kettle, not knocking everything over) remains almost impossibly hard for robots.

This upside-down state of affairs has a name: Moravec’s paradox.

The hard things are easy and the easy things are hard

In the 1980s, the roboticist Hans Moravec and a handful of AI pioneers noticed something counterintuitive about what computers found difficult. High-level reasoning (logic, algebra, board games, the stuff that makes humans feel clever) turned out to be relatively easy to program. But low-level sensorimotor skills (seeing, walking, grabbing, balancing) were monstrously hard.

Moravec set it out in his 1988 book Mind Children, and the wording is worth getting right. He said it is comparatively easy to make computers show adult level performance on intelligence tests or at playing checkers, and difficult or impossible to give them the skills of a one-year-old when it comes to perception and mobility. Note the game he chose. It was checkers, not chess.

Every parent has watched a toddler do the “impossible” version without instruction. Reach out, grasp a toy, adjust grip, don’t crush it, don’t drop it. No robot does that as well as a distracted two-year-old.

Blame (and thank) evolution

The paradox has an elegant explanation, and it’s about time: deep time.

Abstract reasoning is new. Humans have been doing mathematics and formal logic for a few thousand years. As skills go, it’s barely out of the box, which means our brains haven’t had long to optimise it. It runs slow and effortful, which, conveniently, is the kind of step-by-step process a computer can copy.

Perception and movement are ancient. Your ability to see a scene, understand it instantly, and move a hand through it is the polished output of hundreds of millions of years of evolution across countless species. It feels effortless precisely because evolution spent an eternity making it effortless. All that hard-won machinery is buried below conscious thought, which is exactly why it’s so hard to reverse-engineer.

We built machines that are good at the things we find hard, because those are the things we actually understand how we do. We’re stumped by the things we find easy, because we have no idea how we do them.

Why your warehouse has robots and your home doesn’t

This is why automation arrived first in tightly controlled environments. A factory floor or a warehouse can be engineered around the robot: flat floors, known objects, fixed lighting, parts that arrive in the same place every time. Strip out the chaos, and manipulation becomes manageable.

The real world refuses to be controlled. A home is a nightmare of soft objects, weird lighting, clutter, pets, and stairs. Famously, the DARPA Robotics Challenge Finals in 2015 asked advanced humanoid robots to do things like open doors and turn valves, and produced a blooper reel of million-dollar machines toppling over in front of a live crowd at Pomona, California, and a global audience watching the stream. Not because the engineers were bad. Because the task was Moravec-hard.

About that laundry

Fairness demands an update to the headline. Robots have now folded laundry on their own. Physical Intelligence showed a machine doing it, and Figure’s Helix model has folded towels with nobody steering. The chore in the title is no longer impossible, and anyone still using it as a punchline is a year or two behind.

It is also not finished. Watch the footage properly and the caveats stack up fast. The runs are slow. The towels are clean, familiar, and roughly the same each time. The basket sits where the robot expects it, the light is set, and somebody chose the scene before the camera rolled. That is a long way from a person walking into an unfamiliar room, tipping out a tangled load of odd shapes, and clearing it in a few minutes while thinking about something else entirely.

So the paradox holds, just with the goalposts made visible. What these demos prove is not that manipulation is solved. It’s that manipulation can be solved for one curated version of a task, at enormous effort, which is precisely Moravec’s point about how much machinery sits under a chore we don’t even count as a skill.

What it means for the robot future

The lesson isn’t that home robots will never come. It’s that the order of arrival is the reverse of what science fiction promised. We got the “brain” (reasoning, language, strategy) long before we got the “body.”

So the automation wave is hitting cognitive, predictable, indoor work first: analysis, drafting, scheduling, sorting. The jobs that look “low-skill” from a desk (the ones full of messy physical improvisation, like nursing, plumbing, or clearing a cluttered table) are quietly among the hardest to automate.

Moravec’s paradox is really a compliment we forgot to pay ourselves. The most sophisticated thing you did today wasn’t anything you thought about. It was reaching over, without looking, and picking up your coffee without spilling a drop.

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Sources & further reading

  1. Hans Moravec, Mind Children (Harvard University Press, 1988)
  2. Encyclopædia Britannica: Robot technology
  3. Encyclopædia Britannica: Artificial intelligence

Researched and written with the help of AI tools and edited for accuracy. Provided for general information and discussion only, not professional advice. See our editorial standards and disclaimer. Spotted an error? Tell us.

#robotics#moravecs paradox#ai#automation

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