There is a quote from the dialogue that explains what will happen if the prisoners are released from the shackles and able to journey outside.
The quote from Allegory of the Cave that is fascinating is:
He will require to grow accustomed to the sight of the upper world, and first he will see the shadows best, next the reflections of men and other objects in the water, and then the objects themselves; then he will gaze upon the light of the moon and the stars and spangled heaven; and he will see the sky and the stars by night better than the sun or the light of the sun by day (22)?
The quote is a description of what will happen if prisoners who were chained up to the wall. They could only see the shadows that were on the wall from a fire blazing behind them; inside of a cave where it is dark, the only light is a fire. If the prisoners were released from the wall and cave the visuals of the outside world will be difficult to view. The writer wants to know if they will see better at night better than the sun at day? I believe the prisoners would see better at night since there eyes are more adapted to the dark than the