In Plato's "The Allegory of the Cave,"

Socrates uses the imagery of light and dark to draw a distinction
between the eternal, true knowledge found when one transcends the limits
of the cave, and the false shadow knowledge found inside the cave. In
Ernest Hemingway's "A Clean Well-Lighted Place,"
Hemingway also uses the imagery of light and dark; in his case to
contrast the brightly-lit interior of the café with the darkness or
nothingness waiting outside. What do these images represent in
Hemingway's story, and how do they differ from the way Plato uses them
in the allegory?