How can Plato’s allegory of the cave offer the potential for better understanding of real-life issues?

The 'Allegory Of The Cave' is a theory put forward by Plato, concerning human perception. Plato claimed that knowledge gained through the senses is no more than opinion and that, in order to have real knowledge, we must gain it through philosophical reasoning. Imagine a cave, in which there are three prisoners.

i think the literacy device is "it's frozen head"