Final answer:
Alcibiades' entrance into the Symposium does not imply he is part of the Allegory of the Cave, as these are separate works by Plato with distinct themes.
Step-by-step explanation:
When Alcibiades makes his entrance into Plato's Symposium, it is not implied that he disrupts an allegory about prisoners in a cave; rather, his entrance introduces a different dynamic into the philosophical discussions of the dinner party. The passage provided talks about the Allegory of the Cave, mentioned in Plato's The Republic, not the Symposium.
The Cave is a metaphorical depiction of how people come to understand the truth in life. Those present discuss various topics, including the nature of love, but Alcibiades' entry does not pertain to the allegory that Socrates describes to Glaucon.