The control of artificial limbs by thought alone:

These inventions sound amazing. It is incredible to me that humans can create instruments that eventually intertwine themselves with our physiology and, in part, become a part of us. For a person who has lost a limb or was born without one, I can only imagine how this would revolutionize their life. I see no issue with these inventions being available to such people. But, as we discussed in class, it is always scary to think about good things getting into the hands of bad people.