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BalrogPoop t1_j40dy0b wrote

Reply to comment by abrandis in Physicists have discovered that mimicking human muscles can lead to more efficiently designed electric motors for use in robots and appliances. Their bioinspired motors use up to 22% less energy, have a greater range of motion and can lift objects higher than typical electric motors. by Sariel007

Probably because wheels aren't very versatile compared to limbs, you can't defend yourself with a wheel like a foot or a fist. Also biologically difficult to grow since youd need some way of controlling them but I can't think how you'd do do the physical attachments in a biological sense since animals tend to be made up of long stringy fibers or hard shells.

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