>>24533319Consider the opening words of the whole dialogue, "I went down," "kataben." A "katabasis" is a journey to the the underworld, but here, instead of the underworld, Socrates visits the Piraeus, a bastion of democratic sentiment in Athens. The cave itself is fundamentally a political image, describing from the beginning the situation regarding our education, and this is emphasized in the cave image when the philosopher goes back down, and the prisoners are described as winning honors in a contest over who recognizes the shadows on the wall, with Justice being one of the shadows pointedly named. That contest itself matches up explicitly with the Thrasymachus argument, where Socrates sniffs out that he was arguing in order to win honor and reputation for his speeches about justice and injustice.
As far as the contents of the Republic needing to be qualified or reevaluated goes, there are different signs throughout, but the three most evident would be 1) a critique of poetry followed a few books later by descriptions of philosophic activity using predominantly poetic images (the sun, the divided line, the cave), 2) an insistence to Glaucon twice that there's a longer harder road toward understanding things like the soul or virtue or being, and that what is actually discussed is only a shortcut and not the full matter itself, and 3) Socrates' insistence that he only has an opinion about the Good, not knowledge, which is immediately overlooked or forgotten when he subsequently gives a stirring account of what the Good might be like. There are other little signs that something distorted is going on (Eros, *the* philosophical passion of soul in Symposium and Phaedrus, and the only subject Socrates insists he knows about in those two dialogues but also Lysis, Theages, and Charmides, is denigrated in the Republic, reduced to a simple appetite for sex, and associated with the tyrant; the principle "one man, one art," and the demand for precise speech throughout, as well as the Forms being associated with speech, plus the mathematical education, are all sourced from *Thrasymachus* who demands precise speech in book I), and the cave is an opportunity for reorientation.
The dialectical passages are still worthwhile, but they may mean something different if Socrates isn't speaking so frankly on account of everyone else being unable or unwilling to even start to see things as he sees them. Socrates sometimes makes suggestions meant to be ridiculed by his interlocutors in order to draw them in, such as the original first city in speech, what Galucon dismisses in book II as the "city of pigs."