"No, no, it's--it's interesting," Credence listens with rapt attention, because he understands, on some level. At least he's heard stories, sometimes read about them in the paper. There were a few in the New Salem Philanthropic Society, though they never talked about it. Hell, no one ever talked to him there, so it was par for the course.

He's just trying not to think that some of what Sam is describing happens to him, too. That's impossible, though, he's never been in war. It must work differently in his world, or something to that effect.

"I'm not sure what PTSD is, but it sounds like something when people were in the war from my world. It's called Shellshock, I think."