When is the part of bobs personality that pony finally understand?

Ponyboy finally begins to understand Bob's personality during the rumble when he realizes that Bob, despite being a Soc, has his own struggles and insecurities. This understanding deepens after Bob's death, as Ponyboy reflects on the complexities of their lives, recognizing that both Socs and Greasers face challenges and pain. He realizes that Bob's aggression stemmed from a troubled background, prompting a sense of empathy rather than hatred. This moment marks a significant shift in Ponyboy's perspective on class conflict and human connection.