When Ponyboy says that Randy "ain't a soc...he's just a guy" in "The Outsiders," he is making a significant realization about the world he lives in. Throughout the book, Ponyboy has been keenly aware of the divide between the greasers and the Socs, and how this divide has led to violence and animosity between the two groups. However, in this moment, Ponyboy is able to see beyond the labels that society has given them and recognize their shared humanity.
Ponyboy's realization is significant because it shows that he is growing and maturing as a character. He is no longer willing to blindly hate the Socs just because they are from a different social class. Instead, he is recognizing that the Socs are not so different from himself and his friends. This realization also sets the stage for the resolution of the conflict between the two groups, as it suggests that a reconciliation is possible.
Furthermore, Ponyboy's statement also highlights the theme of the book, which is the danger of labeling and stereotyping others based on superficial qualities. Through his experiences, Ponyboy has come to understand that people are complex and cannot be easily categorized. This understanding is reflected in his statement about Randy, as he realizes that even though Randy is a Soc, he is also just a human being with his own struggles and challenges.
Overall, Ponyboy's statement about Randy is significant because it shows that he is developing a more nuanced understanding of the world around him, and is no longer content to view others through the lens of their social class or labels.