The prisoners have been chained since childhood, and can only look from side to side. Between the fire and the prisoners, higher than the prisoners, there is a road with a low wall built alongside it, similar to the screen set in front of a puppet master. People, and animals, often walk along the road, sometimes talking and other times silent.
The cave is a metaphor for human existence. The people in the cave accept the shadows on the cave wall as reality because this is all that they have experienced. The echoes they hear are assumed by them to be real for the same reason. Plato is trying to illustrate that people know little truth about the reality of the world. The philosopher is the escaped person who goes into the light and can see the true reality of the world around them. Plato argues that it is the duty of the philosopher to inform the people in the cave of the light. This means the philosopher 's role is to spread the word to the people of the true reality of the world.
Plato described symbolically the predicament in which humanity finds itself and proposes a way of salvation. Throughout the conversation, ideas develop that are meant to teach people about themselves, their