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Benjie's Humanoid Olympic Games

Benjie's Humanoid Olympic Games

55 comments

·October 16, 2025

bnjmn

Here's a use case that seems more science fictional to me (as the parent of a 2yo) than warp drive: a robot that can gently restrain an uncooperative human baby while changing its diaper, with everything that entails: identifying and eliminating all traces of waste from all crevices, applying diaper cream as necessary, unfolding and positioning the new diaper correctly and quickly, always using enough but never too much force... not to mention the nightmare of providing any guarantees about safety at mass-market scale. Even one maimed baby, or even just a baby some robot neglects to prevent from falling off the changing table, is game over for that line of robots.

Is there any research program that could claim to tackle this? It's so far beyond folding laundry and doing dishes, which are already quite difficult.

I wouldn't bet my life on this tech _never_ materializing, but I would mistrust anyone who claimed it was feasible with today's tech. It calls for an entirely different kind of robotic perception, feedback, and control.

robotresearcher

> It would require an entirely different kind of robotics.

I was 100% with you until suddenly this technical claim pops out. You might feel this way, and might be right, but why? Changing a diaper is crazy hard, I absolutely agree, but you seem to be just declaring from vibes that we 'require an entirely different kind of robotics'. Can you put your finger on why this is true?

Not nitpicking for the fun of it - I'm genuinely interested. Robot person.

nerdsniper

The main limitation right now is that robotics are very limited in their sense of touch.

After that, they are limited in their understanding of physics. After that, perhaps understanding of physics and physiology would come into play - but perhaps superhuman perception and reaction time could reduce the need for intuitive understanding physics and physiology.

shubb

I think it needs a water gun. If the diaper was a spray on layered rubber, like a sponge then an impermeable layer, and then you sprayed a solvent to clear the old diaper and poop and then spray on a new one. You'd just need to slot them into styrups briefly or some socks on strings to move the legs into a good position.

But can this be done with baby skin and lung safe chemicals at a reasonable temperature?

Point being humanoid designs for robots that manipulate objects designed for humans are an artificially hard problem we have decided to fail at solving.

dylan604

Well, Mr Robot person, would you let today's robotics change your clothes right now? If you wouldn't, then why would you allow it any where near a baby? If you would, why? What robot with what tech would you allow?

robobenjie

This is a great one. The manipulation is hard, but we're probably on a trajectory to be able to do it in 1-3 years if you were tolerant of some risk to the baby, but, of course, your tolerance for injuring babies is basically zero. I think 'risk & reliability' is a good potential category: there is the bar of 'got it to do a task reliably enough that we got a video' and the bar of 'got it to do a task reliably enough that I'd risk an infant in its grippers.

Judgmentality

> but we're probably on a trajectory to be able to do it in 1-3 years

This is wildly optimistic. I quit working in robotics because I got tired of all the bullshit promises everybody made all the time. I'm not saying robotics isn't advancing or the work is unimportant, but the spokespeople are about as reliable as Musk when it comes to timelines.

I doubt it will happen in 10 years, even with a constrained environment and hardware that costs well into 6 digits.

amarant

I think GP was basically talking about doing it on a doll. As in, a robot in 1-3 years might be able to change diapers with occasional success, but half the tries will result in a dismembered diaper user: we'd use dolls in this scenario, since dismembering babies is taboo and generally frowned upon within the robotics community.

dylan604

> your tolerance for injuring babies is basically zero.

Um, no it's not. Is absolutely zero tolerance. There is not weasel words out of this. If a robot was to cause any pain to the baby, there would be no remorse. There would be no front of mind thoughts to not repeat the same thing the next time. There would be no guilt for causing pain to the baby.

Why you would "basically" this the way you have is disturbing.

robobenjie

Sorry, this is me communicating like an engineer. In a technical sense risk of anything can only approach zero: never actually get there. I meant that there should be essentially zero chance, similar to holding a baby in your arms or putting it in a high chair, and probably less chance of injury than driving in a car with a baby in a car-seat. Basically zero.

poly2it

I don't think the parent comment advocates for hurting babies. It just, probably correctly, states that cherry picked examples won't be representative of roboty safety with infants in the next years, but that true safety will improve over time as well.

Onavo

Why? There's nothing particularly special about this problem. I would bet a year for an alpha version, and production version in 5 years. We are not exactly limited by mechanical engineering here, there's nothing particularly unique about the human hand that can't be replicated. Tele operated surgical robotics have been a thing for decades. Give it a few months for the multimodal robotic VLM/LAMs to catch up. In many ways this particular problem is a lot more well defined than e.g. self driving cars.

tintor

> there's nothing particularly unique about the human hand that can't be replicated

Humanity is far from replicating / matching performance of human hand.

trhway

> a baby some robot neglects to prevent from falling off the changing table

that is when we think about 2 handed robots. 6 handed robot can easily have 2-3 hands assigned to tightly keeping the baby. Humanoid robots are handicapped by their similarity to humans which is really an artificial constraint. After all we aren't building airplanes using birds as the blueprint.

On the similar note - while not about baby, was just rewatching an early Bing Bang Theory season with this episode where Howard "falls right into the mechanical hand"

fgbarben

won't the baby feel dis-abled by only having two arms?

trhway

On the other hand - the baby will from the beginning develop an instinct to keep track of 6 hands flying around instead of just 2. Will help in future street fights :)

In general, looking at the AI coding agents i think we all either already feel or soon will feel disabled. And honestly i think human race with its perception of itself as the "top of the Creation" is due for a modesty lesson to help speed up the evolution. We're spending tremendous resources unproductively, be it wars or just ineffective economies, etc. We don't feel the urge to develop our civilization and to evolve ourselves in all aspects - from mental and biological to cyber-integration. The Mother Nature doesn't like such relaxed species.

ubj

Platinum Medal: Complete a gold medal task in the presence of multiple children between the ages of 3 and 8. The children must remain safe throughout (and after) the entire process.

numpad0

Can I say something: could you all please stop inserting contaminated tool back into a jar of food? You use a clean tool to take out the amount you eat, and that's it.

You can put it back if the tool had touched nothing but: air, the food in the jar, and your hand at the operating end. Otherwise, that butter knife stays on your dish for the rest of the meal. The exception would be if you cleaned the tool, like bare minimum by wiping with a brand new piece of tissue paper(but that's kind of wasteful).

Is that an outrageous ask? I know it's probably not a huge deal, like free water and such, and my techniques are that of total amateur being never professionally involved in medical and/or bio science fields, but just, how can you stand possible breadcrumbs IN THE JAR!?

benjiro

> but just, how can you stand possible breadcrumbs IN THE JAR!?

Bacteria can do a number on people... Kept telling the wife to not cross contaminate jars, and other products. But you know, she knows better...

Wife was eating some fish in can, puts spoon back (with lovely saliva bacteria), puts in fridge "i wil eat tomorrow", 2 days later she eats the leftover.

She enjoyed a hour+ of "fun" muscles contracting stomach cramps to the point it was almost hospital time. Learned her lesson, well, ... for fish.

Its always like "but i do not like to keep using fresh utensils". I am always: "the dishwasher does not care if it 20 or 40 utensils". Its the same amount of wash and cost. So stop trying to recycle utensils!

dmillard

Interesting post and great reference to [1] about why laundry hits a sweet spot of capability.

Interestingly the repeated critiques in the article are about sensor richness: primarily force feedback and tactility, which indicates lacking hardware. Software only robotics has a long and fraught history, but it really feels to me that current industrial hardware could be driven more intelligently without much change. No doubt the "ideal" robot for any given task requires developments in both.

I'm also curious about safety, since generally capable mechanisms need a multilayered safety stack that includes semantics, and cobot certification is likely not enough anymore. Examples: feeding someone the wrong pill, pouring a glass of water into electronics, cutting vegetables vs fingers.

[1] https://substack.com/redirect/82d94852-76b6-4b0d-8595-86e46a...

NedF

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byearthithatius

Think about how fast progress is being made now. When I was a kid in the early 2000s we would see some basic robot progress on movements (almost always from Boston Dynamics or sometimes China) and we thought it was incredible. Robot dogs running was amazing and five or so years later a backflip blew our minds. Those robots were specially designed and didn't look humanoid. Now we have bi-pedal humanoid robots and they walk and move fairly capably - even able to get up after falls. Now within the last year I have seen them learn Kung Fu, become really fast at getting up, become resistant to being knocked down by quite a lot of force, and now even doing tasks like those shown here.

Just imagine 2050 if the progress continues at this rate. I am both excited and really scared.

hatthew

Almost all progress at doing tasks reliably has been made with 2 massive caveats:

1. Force. Walking, running, fighting, doing backflips, etc. all allow for large amounts of force, without a lot of dynamic precision required. Many common tasks require precise and dynamic force. E.g. for washing a window, pushing too hard breaks the glass while pushing too softly will leave streaks.

2. Environment interaction. Most reliable humanoid robots do minimal environment interaction beyond self-balancing. They walk/run/jump in environments that are largely open, with usually convex blocky obstacles. The real world has lots of tasks that require processing beyond low-resolution maps of solid/open space. E.g. I'd want to see a robot that can walk through a forest: jumping/stepping over thin branches that are hard to see, ducking under fallen logs, pushing though bendy branches without breaking them, avoiding ground that is muddy, and seeing through the current obstacle to determine if the obstacle beyond is traversable.

Just to reiterate, I don't see fast progress being made on doing these tasks reliably. It's easy to show 1/N success rate, and much much harder to show ~N/N success rate on these dynamic tasks.

robobenjie

Hey Hacker News. Curious if folks feel like I'm missing categories of challenge.

iainmerrick

Making a bed.

You need to manipulate a large sheet, and you probably need to move around, bend down and lean over to reach all the corners. Bonus points for neat hospital corners on a flat sheet.

Putting pillows in pillowcases is another fun one. Usually pretty easy, probably a bronze medal.

Gold medal: put a UK super king size duvet inside a duvet cover. It's huge and awkward, there are buttons, and it's almost but not quite square (why??) so there's a good chance you'll get it round the wrong way and have to rotate it 90 degrees.

muvlon

Something I still struggle with as a human: Cracking an egg into a bowl. No making a mess and no egg shell in the bowl.

Gold Medal: Separate the egg white from the yolk!

nancyminusone

I'd go for something in the manipulation of ropes or wires.

State of the art seems to be that they can untangle a loosely knotted cord.

Untying a short rope with a tightly pulled overhand knot in the middle seems like it's decades away. You have to be able to grip it well enough, then twist the rope and push (even though every physicist says pushing a rope is impossible).

robobenjie

Interesting. Futurism is super hard, but "decades" too far away to me. I think with strong 2 finger grippers this is probably close to state of the art, especially with a wrist force sensor, like the TRI setup.

calepayson

Belaying a climber would be a hilarious (and fraught) gold medal challenge.

inasio

There are already robots that do that (autobelayers)...

tintor

replacing an inner tube on bicycle wheel - strong forces / both arms / level use / dexterity / problem solving

robotresearcher

Standard evening family home tidy/reset - toys, books, clothes, shoes away in their places. All over the house.

Oh, and load/unload dishwasher. Same with laundry machines. Along with folding laundry, these are the domestic robot equivalents of 'de-mining' and 'search and rescue': the classic motivating use cases for mobile autonomous robots.

amirhirsch

I like these benchmarks and the videos are funny!

Consider examples using building tools like screwing in a drywall screw, or hammering a nail, using a paint roller, caulking a sink, minor plumbing repair with a torch and solder. These differ enough in terms of forces, state changes, and combined dexterity/acuity (two-handed proprioception) from the windex, sandwich and key examples

Ikea product assembly for gold medal.

levocardia

Maybe careful application of large amounts of force? Opening a jar, peeling garlic, splitting a squash, opening a soda can. This category seems like a good test of "grip" strength + force feedback + sense of touch.

mjq7

How about something with unpacking items from a shopping bag, i suspect the difference in bags (standard plastic, reusable etc) and certain items can really crank the difficulty.

It can also create a good time of a story - open the door to get the grocery delivery, unpack the delivery etc.

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XCSme

I don't know, for me it looks like the demo robot already does it quite well.

poly2it

Great post! Now somebody with the connections just needs to make it happen. For event five, slippery when wet, you should definitely include drying your hands on a towel, as it serves an important hygienic function.

bee_rider

Rather than teaching your robot to fold inside-out clothes, you should teach it to attack people who put their clothes in the hamper inside out.

arscan

I think my shirts just automatically get inside-outted in my washer/dryer? I certainly don’t put them in that way, and it seems like I spend a lot of righting them when putting away laundry.

bee_rider

Try putting some in inside-out and seeing if they get turned outside-out.

I’m also curious which device does it!

We should work this out, and also we will need a lot of robots to go after the manufacturer.

blauditore

I agree, but in some cases it makes sense to protect the print. Although I habe no idea if it actually helps.

dylan604

If it's vinyl applied with heat (numbers on a jersey as an example), they recommend turning inside out. That way, if it gets too hot in the dryer, it only sticks to itself instead of to other garments. Losing the one garment is better than multiple.

nashashmi

Clothe instruction care sometimes requires washing clothes inside out.

toast0

I've seen suggestions that having your clothes inside out in the wash helps them get cleaner. And if it keeps the AIs under control, you know, benefits.

HarshP123

This is amazing!!