Strabe t1_izhdrfa wrote
Reply to comment by Ok_Kale_2509 in US researchers have created metamaterials that move in response to ultrasound. They say it could provide a mechanism for movement in robots that would not require them to have an onboard power source. by lughnasadh
The original premise was to use human brains as biological computers, but studio execs thought audiences wouldn't get it.
Edit: http://scifi.stackexchange.com/questions/19817/ddg#19819
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