Everything was impossible before it wasn’t. At one point in time, many things that we now take for granted were thought to be impossible. Think about this: if you went 200 years back in time with a cell phone and you were chatting with your buddy, everyone would think you were a magician. You can talk to someone who isn’t there, that’s impossible! Those who say something cannot be done should get out of the way of those who are already doing it.