this post was submitted on 29 Jul 2026
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In spite of the demonstration videos of robots running and jumping and carrying boxes and slowly sorting packages, none of them are anywhere close to being ready to handle construction jobs, or most manufacturing jobs. And, they can't design or make the machines that automate the processes.
It's a billionaire's dream that this is happening now, it's not. One of the major hurdles is power consumption, as we're all seeing while they build out these "data centers". Robots and computers cannot match the efficiency and self-sufficiency of a human. In a picture:
Yep. I work in prosthetics, people tend to overestimate current battery technology and underestimate how much energy it takes to move around a couple hundred pounds.
Even with batteries that cost a small fortune, we haven't been able to create a lower limb powered prosthetic that can keep up with the human body for more than a couple hours.
There's a lot of hype about the humanoid robotics coming out of China, but most everything is just marketing science fiction. Once you factor in the initial cost, power consumption for processing data, multiple batteries per unit, and the massive amount of general maintenance...... It becomes pretty apparent that things aren't going to pan out anytime soon.
I build limbs out of reinforced carbon fiber and titanium and even those acquire a ton of wear in a relatively small amount of time. Any bipedal robot with plastic parts, made to do intensive labour is going to start falling apart almost immediately. The human body takes a ton of damage throughout the day as well, but it's self repairing.
The equation changes a lot when you start altering the assumptions.
Who says the robots have to have batteries? Human workers drag power cables all over construction sites. Why can't a robot be built that's smart enough to manage its own power cord? Power cord management seems simple compared to doing meaningful construction work.
The wear and tear is a legitimate concern, but fixed industrial robots have been operating for many decades. The wear issues are obviously solvable in the right context.
Keep in mind, prosthetics may not be the perfect analogy. We imagine these things as humanoid, but they need not be. You might have a drywall hanging robot that has suction cups to lift up panels and a screw gun to affix them. They might not even have legs. A welding robot could just be a welding tool on the end of a long boom arm.
There's really no need to even make general purpose robots. It's not like individual humans practice every trade. You could have trade-specific robots. A drywall robot, a plumber robot, an electrician bot, etc. Each equipped only with those tools needed to complete just that trade. And instead of mechanical hands, they could simply be mounted.
I would agree that humanoid battery powered robots are not likely to result in mass employment in construction any time soon. But if you start relaxing those constraints, the possibility for mass worker displacement exists. A robotic construction site need not visibly resemble a human one.
I'm sure it seems simple from your desk
One thing: do you think that those power cables are permanently connected to the workers? Are you thinking about workers using extension cords for tools or the ones laying cable for the building, because it sure as fuck isn't simple to do either, which is why battery and petrol powered tools exist, and why the cableways are planned well in advance.
Only with maintenance and servicing by a human trained to see every potential flaw and monitor the equipment long term. Nothing, not even the most expensive equipment you can imagine, is without the need for regular maintenance.
Do you think that a construction site works the same way as a factory building cars? Just one long conveyors that shits out a fully built house? Workers move up, down and across the building dozens of times a day in a job doing multiple different jobs within their field, problem solving on the fly.