One Homer but many Socrateses.  Early, Middle, and Late Dialogues, plus Xenophon.  Ordering of the dialogues, ordering of Socrates's life.  Mention of the Parmenides, purported to have occurred about a century before Plato wrote it.  Zeno's paradoxes.  Galileo's.  Diogenes the Cynic's refutation of Zeno. Quick exposition of the Forms or Ideas.