A simple daily event has amazed me and triggered this question. I have read and heard about hand-eye coordination. It quite straightforward when you e.g. want to open a door or play Xbox. In this case either your hand is in your view or your hand will feel the buttons of your Xbox.
But when it comes to catching a ball or try to catch a falling object, our hand is totally out of our view since we are closely following the trajectory of the moving object. But meanwhile our hands moves in a 3D space and align it self perfectly in the path of trajectory correctly. This is what amazed me.
If you can see your hand and the object/ball simultaneously, its just a matter of moving our hand in the path of that ball/object. But having hands totally out of sight but catching the ball/object perfectly every time is amazing piece of nature's engineering.
How humans have achieved such a amazing piece of coordination in a 3D space without seeing where the hands are located?