Sam hadn't thought it was a big secret, but then again it wasn't something that came up in everyday conversation. Besides, Credence was new. Either way, Sam doesn't really think too hard about Credence's low whisper and sudden interest.

"I don't know all the details," more like he doesn't want to gossip and SHARE all of the details, but he continues, "...but I guess the simplest way to put it would be to say that it was a science experiment that they didn't fully understand." Which, if he had known Credence was thinking "magic" he might have found amusing how far off he was.