What about that? Does it say that the event itself is entirely fabricated, or that not everyone understood precisely what the cause for these phenomena were? I think it is the latter. Think of it this way. You take a bottle of whiskey with a nice pretty elaborate label but no words on it and set it on a table. You get a group of people and position them around the bottle so that they each have a different view. You ask them to describe exactly what they see. You'll get a different discription each time. Is it mass hysteria because they all don't have the same discription, yet they all swear they were describing a bottle of whiskey with a pretty elaborate label?