  This essay intends to present a novel approach to the concept of
"transaction" in quantum physics. Breaking with Cramer's original theory, the
transaction is not connected to the simultaneously retarded and advanced
spacetime propagation of classical fields, as in the spirit of Wheeler-Feynman
electrodynamics. Instead, the transaction is seen as an archetypal structure
intrinsic within the quantum formalism. The present approach is advantageous in
that, while preserving the essential point of Cramer's theory, is also fully
consistent with the standard quantum formalism. In particular, it has the
advantage of avoiding the introduction of elements which are completely
extraneous to quantum formalism (such as the propagation of real physical waves
in four-dimensional spacetime, the phase difference between offer and
confirmation waves which is necessary for the elimination of "tails", the
echoing mechanism, etc.)
