PLato's Allegory of the Cave
...in Plato’s "Allegory of the Cave" theory, this is very much the same. The difference was that the prisoner didn’t know about the great life of the outside world. He only knew his world. So, he ran back into the cave. The prisoners were chained in the cave for twenty years since the day they born. As soon as one of the prisoners reaches the outside, he sees trees, water, mountains, the sun, and birds. All his life, however, he has seen almost nothing. He takes everything in at once and it is too much. All the prisoner has seen in his life are the shadows of the guards on the wall in front of him. The guards switch posts every hour and each one brings a different object. One holds a spear, another a chair, then a book, and a globe. The prisoners can see the guards’ shadows projected on the wall they are facing. Every guard is holding a different object. The prisoners see the guards’ shadows as a deformed figure. They don’t know that the guards are really humans holding something. They also don’t know that they are only looking at shadows on the wall. When the prisoners are released and one of them walks to the entrance of the cave and sees the outside, he is dumbfounded. ...