Rupert Sheldrake-A New Science Of Life : Hypothesis of Formative Causation.

In the context of the mechanistic theory of life, the concious self as to be seen as a sort of 'ghost in the machine'.  To materialists this notion seems inherently absurd.  And even the defenders of the interactionist position have been unable to specify how the interaction takes place, beyond the vague suggestion that it might somehow depend on a modification of quantum events within the brain.