My cold is kicking into high gear, so I'm posting Tuesday's pick early. I'm going to stay in bed tomorrow and try to rest.
The Bingo pick for Tuesday is Knocks.
A mainstay of paranormal investigating is the documenting of knocking sounds or taps, which are believed by many to be attempts at intelligent communication by unseen entities. The concept is basic enough to have partly inspired the acronym of The Atlantic Paranormal Society (in addition to the military melody eulogizing fallen soldiers). Taking inspiration from nineteenth-century seance mediums who beckoned a spirit to knock as a sign of their arrival—more often than not, the medium’s cohort knuckling the underside of the table—paranormal investigators frequently attempt to initiate knocks and taps as a way for unseen entities to “make their presence known.” However, a system of raps and taps are also encouraged to answer basic yes/no questions, much in the fashion that a K-II Meter is now being used. Detractors and skeptics point out that, during the nighttime hours that most tapping and knocking phenomena are heard (and during which most paranormal investigations are staged), building infrastructure responds to drops in temperature and changes in barometric pressure and outdoor wind speed that create these sounds. For this reason, responsible paranormal investigators give taps lower priority as evidence or reject it altogether, unless 1) it seems strongly to suggest intelligent responses to questions, and 2) it coincides with other anomalies such as EMF spikes, Cold Spots, EVP, and so on.
Source: Pacific Paranormal Investigations