There are many testimonies to seeing ghosts and strange apparitions. There are unexplained accounts of ghosts, hauntings and paranormal phenomena, which have created ghost tours, ghost hunts, books, films and videos about related subjects. There is a fascination with ghosts, tales of mystery and imagination.
Explanations for these accounts of ghosts and apparitions have been put down to imagination, tricks of the light, misunderstanding, wishful thinking, superstition and ignorance. A scientific and rational explanation is said to be necessary or available. However, sometimes the evidence, sometimes photographic, and the testimony of credible witnesses would lead to the conclusion that some things are unexplained and beyond our current understanding. There are fascinating photographs on Google images and YouTube videos showing mysterious figures, faces and shapes. Some would appear to defy rational explanation. They remain unexplained.
There are those who were once sceptical or against any belief in ghosts or the supernatural who have radically changed their minds after an encounter, a siting or an experience of unexplained phenomena.
I have met people who are absolutely convinced about seeing a ghost, or of seeing an angel, and even feeling a touch of someone who disappeared. They would deny it was a trick of the light, or an imagined event. They remain convinced of their experience. No rational explanation satisfies them.
One explanation of ghostly phenomena and apparitions, which I find worthy of consideration, is that some events in the past have in some way recorded or replayed the events as a result of certain conditions and residual energies. Today we can replay events on a video recorder, film projector or photographic device.
Perhaps it is possible, under unusual conditions, for past events to be replayed or reproduced in some way. Certain atmospheric conditions could bring back past images like a video recording or movie film.