Well, there's change, which J got when he started making puns, and there's damage, which is what happens when you use a sledgehammer to solve a square peg/round hole problem. J's trying to fix the latter, and if apathy is situation normal for Bone Man...well, you can't win 'em all.

"Only if you tell me what C includes." He lets the deflection slide for now, even if it implies much bigger problems - those bigger problems are ones he's not prepared to handle right now, and fixing the tune takes priority.