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Hugsboxtoday at 5:38 PM32 repliesview on HN

I don't understand why they would implement humanoid robots instead of purpose-built robots. The human form is not the most optimal way to do most tasks, especially as it relates to manufacturing. Robots don't need to look like humans, they need to be useful. Seems like putting in an awful lot of extra unnecessary work to end up with a worse result.


Replies

ACCount37today at 5:41 PM

I'm not sure how many times this has to be restated.

It's car manufacturing. Everything that could be done by a purpose specific robot arm bolted down to the factory floor is already done by a purpose specific robot arm bolted down to the factory floor.

What remains unautomated, then?

The long tail of tasks that are too minor, too finicky, too open-ended or too reliant on manual dexterity to be offloaded onto traditional robots.

This is where this new generation of robotics comes in. This is the kind of task they're designed to do: "a task that's still done by a human in a high automation environment". Universal robots are angling for the tasks that are impossible or uneconomical to automate with traditional industrial robots.

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nradovtoday at 5:44 PM

I took a tour of the BMW Group Plant Spartanburg body shop. It's heavily automated with industrial robots inside safety cages. But they still have human workers pick up parts from rolling carts and place them into templates for the robot arms. BMW has been running a trial with Figure humanoid robots to automate that remaining piece. Apparently those robots haven't worked very well, but presumably Hyundai thinks they can do it better?

https://www.bmwgroup.com/en/news/general/2024/humanoid-robot...

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jbullock35today at 8:07 PM

This recent article has a few relevant notes about the uses (or lack thereof) of humanoid robots: https://www.csmonitor.com/Business/2026/0612/ai-humanoid-rob....

terramextoday at 5:55 PM

Humanoidal robots make sense when they need to operate in spaces designed for humans bodies. Cars are designed and built to be used and serviced by humans, especially their interiors so you need humanoid robot to automate building them. Car exteriors are not built for humans to interact with so they are already being built by specialized robots.

csallentoday at 8:01 PM

We have a world built for humans, designed for humans to walk around and get things done. How, exactly, would it not be useful to have a robot that looks, walks, runs, jumps, lifts, carriers, pushes, pulls, twists, bends, steers, and labors like a human? It would obviously be incredibly useful.

SeriousMtoday at 8:11 PM

At least a third arm would be helpful. I can't count how many times I've wished for a third arm!

jrflotoday at 5:51 PM

Custom built robots are expensive (basically an R&D project in themselves) and inflexible, if you want to update the process you have to redesign your automated system. The dream of humanoid robots is they can adapt to new manufacturing processes like human workers.

bigmadshoetoday at 6:52 PM

Two things: 1) we have abundant training data for humanoid embodiments (watch humans do things), and 2) the world is already designed for humans.

ckemeretoday at 6:47 PM

Training data of task completion. See, e.g., robots doing backflips. Presumably there’s an optimal robot for gymnastics but if you start with humanoid form you can train based on many videos of human movement. The alternative - world model sim with physics and loss functions- perhaps ends up being too unconstrained when you add in optimization of the robot form…

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saltcuredtoday at 6:55 PM

I understand the sentiment, but you assume they are planning to build humanoid robots to walk around the human-oriented space in the factory.

Perhaps they want to put some of the sensing and control features in, so a humanoid-like dexterity or adaptability for the business end of a floor-mounted robot arm?

post-ittoday at 5:40 PM

Because a humanoid robot can replace (theoretically) any human worker, whereas a purpose-built robot can only replace one kind of worker. Or at least that's what Asimov said in Caves of Steel.

Etheetoday at 5:44 PM

I'm spitballing here as I don't actually have a concrete answer for you. But from my understanding automobile manufacturing is one of if not THE most advanced 'purpose-built' robotics sectors. While I agree with you that having a purpose-built thing usually wins out for assembly line manufacturing, I wonder if this isn't an attempt to branch out away from single-purpose robotics into more general or multi-faceted manufacturing.

stephc_int13today at 5:45 PM

I think the rationale is that they are already using typical car factory automation, but they see a huge potential market for general purpose robotics in the coming decades, they don't need the humanoids, they are simply dogfooding a future product.

I think this is smart and not very risky. Tesla is playing a similar game with Optimus, for now Hyundai/Boston Dynamics is at least 5 years ahead.

ramses0today at 6:14 PM

I'm looking for a better video of it (from one of the engineers), but look at the NASA robot hand. https://www.youtube.com/watch?v=vfDXzkFHnz0

https://www.google.com/search?q=nasa+robonaut+video+hand+why...

The gist of it is that all tools on the spacecraft (eg: space-drill, space-coffee-maker, space-airlock) are all designed to fit a gloved human astronaut hand. Waaaaay more complicated to make a robo-hand than a robo-suction cup or robo-claw, but then you are matching the environment, and guarantee tool compatibility against all extant tasks!

We already have specialized robots on earth... paper slicer, lawn mower, bazooka, whatever. They're all machines that are specialized for the task at hand, we're not making a humanoid robot that gets down on all fours and individually plucks blades of glass.

The car factories already have specialized robots... they're not mimicking a human hand holding a can of spray paint, shaking it up, and painting the car that way... it's a 6-axis arm, or a whole "grab the car and flip it while spraying paint" system.

It's not about inventing purpose-specific robots, it's about handling that long-tail of "stuff with tools that a human is designed to be able to use." Go over there, push that button. Go move that box from table1 to table2. Etc.

For well defined tasks in the factory domain, make a "real robot". For ad-hoc tasks in the interim... strap an LLM to a camera, battery, robo-legs and arms, cross your fingers, and hope for the best?

marctatoday at 6:49 PM

Maybe it's like Formula 1: it's a purposefully-extreme goal, which drives new development and makes "lesser" goals feel more achievable.

Jegbertoday at 6:22 PM

The human form IS the most optimal way to do most tasks

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stainablesteeltoday at 8:20 PM

they don't need to use the whole humanoid, they can take the legs or abdomen alone and use them as is

the human frame is just an experimental proxy for functionality, which turned out to be promising

two arms alone is the purpose-built robot you're referencing

PeterStuertoday at 6:36 PM

Our'legacy' world is built for human shsped operation. So a generic operator will hsve to mimic human shape.

sgttoday at 5:48 PM

That's like saying there's no need for a generic CPU. The only way forward is a ASIC. Once a generic CPU does everything well enough, it's extremely versatile.

bombcartoday at 6:18 PM

The first somewhat general purpose humanoid robot will sell like gangbusters to the rich, even just as a parlor toy/trick.

carabinertoday at 8:01 PM

Hugsbox has absolutely no idea what he's talking about, that's why he hasn't responded to anyone here.

cucumber3732842today at 5:41 PM

They have god knows how manny bajillion dollars tied up in machinery designed for human use, a human can step in when the robot breaks, and they can buy more robots if the humans get uppity. Those seem like a bunch of good reasons to me.

The humanoid form factor is certainly may not be ideal but I guess they think the flexibility is worth it

itsamariotoday at 6:16 PM

Patient complex moves first.

Dumblydorrtoday at 6:11 PM

You don’t understand because you’re not an expert? First off they have numerous non-humanoid robots if you follow them at all. Second, Clearly they’ve got strong reasoning, they’ve just been bought. Third, out of thousands of attempts at humanoids, their robots are seemingly the best we’ve yet seen in this class. They must be doing it right when so few others got any traction.

dyauspitrtoday at 6:32 PM

This same nonsensical question again. Because the world is built for humans, because these are general purpose to replace a human laborer. It can immediately go from picking up parts in a factory to mowing the lawn in the same day.

justsomehnguytoday at 6:11 PM

> they need to be useful

They would be. When everything what could be done would be done by a robot. 24/7. Even without the lights on the floor.

samptontoday at 6:05 PM

Why do you need software when FPGA can solve everything.

stavrostoday at 5:45 PM

It's much cheaper to create one general-purpose robot for everything than many different robots, each optimized to each task.

RajT88today at 6:09 PM

Robot Chicken had a fairly cynical take on this. I won't link it here.