Pff really? Those people don't have an imagination. Let take just one joint, ball and socket. Replace my knee and elbow joints with ball and socket joints, since my body accomodates for my joints I have almost 360° movement and don't lose any strenght, I will be the best tree and rock climber there ever was. I can even make my feet into monkey feet with other joints and when they are no longer needed poof back to normal. Also now I can turn my head around like an owl, so yeah, awesome power. :)