Why make a complicated mechanical hand with actuaries and joints when you can just make a simple tentacle? And besides, who wouldn't want a sweet sweet robo-tentacle? If I was missing an arm I'd definitely go for it!
The beauty of this design is that it is willing to break from tradition and try a completely new way of giving amputees some dexterity. Instead of creating a complex duplicate of the missing part, she has opted to augment the human form with octopus technology. Mechanically this is a much simpler solution- built like one giant finger with many joints instead of an entire hand. Two "tendons" and a simple motor are all that are necessary.
More photos after the jump.
Great design, Kaylene! Via Wired.