In the book "Obsidian" by Jennifer L. Armentrout, a character speaks impulsively, asking another, "Why are you so cracking?" This question reflects a moment of surprise or admiration towards someone who stands out. It illustrates how spontaneous remarks can reveal deeper emotions or thoughts, often highlighting the dynamic between characters.

The narrative emphasizes the idea that everyone has their own unique skills or areas of expertise. This is confirmed by the compliment that follows, acknowledging the individual's talent. The exchange serves to explore themes of personal specialization and the appreciation of others' strengths.