re: Would you rather lose an arm or a leg?

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Leg for sure, good prosthetics for replacement legs, but nothing for the arm and precise movements of the hand.

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This.

There is a guy at my office who has a fake leg, but you can't see it under his work slacks and he barely walks with a limp. His knee bends like a normal knee, even when he sits down. Really cool.

In 10-15 years, they'll have accessible arm prosthetics that can be controlled with the brain...according to 60 minutes. They showed a human trial and it was crazy. He thought "squeeze hand" and the prosthetic squeezed.