The simple answer to this question is that no one knows. There are some ideas from the world of science and there are metaphysical and spiritual explanations.
The residual haunting is generally...
A residual haunting is a past event happening over and over again. An intelligent haunting is when the spirit can manifest and do things like slam doors, and move things.
basicaly there are three types of hauntings:
Residual, which is like a recording playing over and over.
Intelligent, where the entity appears to interact with the living, possibly passing along...
This is the term used to describe the hearing that remains after a hearing loss occurs. Most people with significant hearing loss still have some residual hearing that can be stimulated by amplifying...