Man must travel in fact he needs to travel; by his own means not through the images or tales, video, TV or books of others. Man must do this himself, see things with his own eyes, through his own eyes and walk it with his feet otherwise he will not understand who or what he is. Fighting the cold allows him to enjoy the heat; planting his own trees gives those trees the highest value. Experiencing distance and lack of shelter will allow him to feel comfort under his own roof.
Man must travel to places he does not know shattering the ignorance causing him to see the world as he imagines it and not as it truly is. This is what will make us experts of what we have yet to see. To become students again and just go out and see with our own senses.