Yeah, that's the rub with those kinds of scripts. They reach conclusions that might be logical on their face, but in the wider context could lead to different solutions. It's a bit forced, but I don't think in this case it hurts the episode.I wasn't sure how/why they jumped straight to that deduction? Seems like it would be safer and more logical for the characters to say it was an energy entity, but they didn't claim to know how it originated.