What is the cause of this beeping sound? Why does a consistent characteristic -- beeping -- occur with diverse phenomena such as UFOs, various alien beings, robots and Bigfoot?
Maybe it’s a mistake to assume that these things are not connected; they may share a relationship with each other in ways we don’t readily see. Some see Mothman, some Bigfoot, others weird aliens or craft, but if they are manifestations of the same kind of phenomena, it isn’t so strange. If they come from the same source, as John A. Keel, Andrew Colvin, and so many others have suggested, it makes some sense. (Keel calls it the “superspectrum.”)