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you can do the one on the right with a regular human hand
You can also unscrew a bottle cap wit one regular human hand
Also you can unscrew a bottle cap from a bottle with a regular human hand
Left - right hard, apparently.
But imagine how many more bottle caps you could unscrew if you had 5 thumbs.
So multiple hands on your hands would be better
part of the problem with this hand design is lack of grip strength. theres a trade off between dexterity and strength because the more mobile a joint is the more positions it can be in with suboptimal leverage, and a more mobile joint is less stable and thus more difficult to exert force through without fumbling whatever its trying to do.
you can see this in the relative strength between humans and chimps. we have much higher dexterity and range of motion than chimps, at the expense of being much weaker. we can throw with power and accuracy and use a lot of tools very well, but most chimps would easily over power us in raw strength while being quite bad at throwing and tool use relatively speaking.
a more dextrous human hand would simply take this tradeoff further toward dexterity and away from strength. looking at how difficult life is for people with poor grip strength i dont think we have much we can afford to give up, and the extra dexterity wouldnt be that much of an improvement. honestly id rather have four arms with standard human hands than two with these special hands.
Yes, but also this is about robotics so that kind of all goes out the window to some extent. You can just have more powerful actuators to increase grip strength or whatnot. That said, biologically, I’m totally with you on the four arm thing.
thats not really true at all. these are features of physics not biology, so robotics have the same tradeoff. in robotics its even worse though because we currently have no actuators that are capable of matching biological muscle in terms of combined speed, force, and precision, let alone in such a small package. if you make a robotic limb capable of the force of a human hand it will be incredibly stiff and slow, or require actuators that are too large and heavy to be feasibly carried by a person, to say nothing of the energy storage. in practice robotics capable of functioning as prosthetics are either sufficiently strong but totally lacking in any dexterity, or have dexterity but are very weak and/or slow compared to biological hands.
the actuator problem is pretty much the single biggest barrier to creating prosthetics that rival the functionality of human hands. people have been working on it for decades, and while there have been some interesting results, nothing has come close to being even a poor replacement for biological muscle. when we finally figure it out, which i think is inevitable if we continue to survive as a species, the robotics we make with them will operate under the same physical constraints as biological bodies.
Fair enough. You seem to be more knowledgeable about this than me. I get that its an inherent physics thing though I just meant that, theoretically at least, you could simply brute force grip strength in a way that you can’t brute force dexterity - at which point it becomes sensible to optimize for dexterity. I guess we’re not as close to that point as I assumed though.
sadly 4 arms would require almost double the chest size and spine length, and a way stronger heart to pump blood around all limbs
What about a thumb installed above my dick so I can bash up her clit while keeping both hands free?
If we are thinking big why not go for a tongue there
I’d spend 95% of the time tasting my own sweaty knob
And that is…a bad thing?
I can do both of these with regular hands…
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You need only two fingers, as long as they are 1 ton hydraulic clamps.
Me, as someone with hyper mobility who has done both of those things one handed:
Does it even require hypermobility or did I just discover something about myself?
I’m hypermobile but most people can do this with practice, especially with bottles. Its actually an essential part of aseptic technique in microbiology labs when drawing from a bottle or sample container.
Yeah, this was a huge convenience thing as a chemist. It’s not as useful in day to day life as caps on drinks etc tend to be too tight, but I still like to use it when the opportunity arises.
I use it a lot when I’m driving if I have a bottle in the drinks holder. I’ve had quite a few funny comments from people wondering how I do it so easily.
Yeah I think it just requires large hands mostly lol
I can open a bottle with one hand already by gripping it with my pinky and palm? Whats the point
I think it’s that they’re holding the bottle while opening it
If I had neural linked prosthetics I’d be down to try stuff like that
Sometimes I wonder what would happen if we created a dolphin with a human brain, or an octopus with a human brain, etc. Are brains plastic enough to adapt? What if after learning how to use one body, the brain was somehow transferred to / plugged into a different body? Would it be possible to learn 2 different bodies and even swap between them at will?
I think so, like cars are a fairly simple version of that. And if you’ve ever used a digger which is essentially a giant arm controlled by hydraulics
Pretty soon they’ll be all thumbs! What could go wrong?
I wonder how good they are for fingering…
I like how you think
Might be useful for someone with a disability. My husband has access to like…1.5 hands so this would be cool!
Heretofore unknown ways of dropping in an alka seltzer
I can screw with my hands tied behind my back. The design is superfluous. Do better
Babe, please don’t rip my dick off on accident with your cyberpunk hands.
or do! then you can upgrade to cyberdick
We (apparently) have the tech for cyborg hands, mechadick is only a stone’s throw away.
This a solved problem. The solution is called the electric screwdriver. If you want one as a prosthetic, go for it.
