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Today’s humanoid robots look remarkable, but there’s a design flaw holding them back
(theconversation.com)
It noted that today’s humanoid and animal-mimicking robots have a “limited number of joints”, which creates a “disparity between their movements and those of the subjects they imitate, significantly diminishing their … value”.
Saved you a click. But…
It's an interesting article that goes into a few details about power use of joints and passive systems in organic creatures that could be mimicked to save energy and processing power. Worth the read of you have a few minutes