There is a wide range of psychic phenomena classified
as "physical." (The phenomenon known as "materialization"
has special characteristics and is not addressed in these comments.)
At one end of the physical range are the simple - but still unexplainable
- knocking sounds that respond to queries and rap out messages.
Then we have the movement and levitation of small items, the movement
and levitation of furniture, the levitation of people, and the manifestation
of various items (known as apports) seemingly from nowhere. At the
far end of the range, where our credulity is furthest stretched,
is the teleportation of human beings across space and through solid
All of these physical events have been attested to
by credible witnesses. The more complex, being rarer, have been
reported by only a few. This makes them easier to dismiss as fanciful.
Easier, but not necessarily justifiable. Consider the knocking sounds.
Detailed acoustical analysis of numerous recordings clearly shows
that these raps are not made by any known physical process.
Some actions may seem more mysterious than others,
but they may all rest on similar principles unknown to science.
In light of the proven occurrences (raps) that we do not understand,
how can we reject the possibility of any phenomena? Especially when
they have been reported by people of sound mind and having no known
motivation to bear false witness?
Granting the reality of the entire range of reported
physical phenomena, both within and without the séance room,
the question then becomes: To what extent do physical phenomena
contribute to the evidence for the Survival of the human personality
beyond the demise of the physical body?