A Principle of Duality and the Causal Law

Abstract

THE possibility of a causal space-time description of experience has recently been often denied, and emphasis has been laid upon the purely statistical validity of quantum-theoretical relations. This denial of a possible causal space-time description has aroused suspicions and diffidence in regard to the newer physics. The purpose of this note is to show that there is no need for the above denial and that we have not only one possibility of a causal space-time description of experience, but actually two of them. This superabundance of possibilities of description is the very reason, as we shall see presently, why some relations can have only statistical validity.