Against (unitary) interpretation (of quantum mechanics): removing the metaphysical load

Abstract: On 6 June 1925 Heisenberg arrived at Helgoland/Heligoland island to escape a fit of hay fever. He returned with a sketch of a strange theory of the micro-world of atoms, which we now call quantum mechanics. This e-print of ours attempts to present a look on that theory which tries to return to the original insight of Heisenberg, on what should be the essence of a theory of atomic realm: it must be a theory of the observable events, in which fundamentally unobservable quantities have no place. No ontological status is given to elements of the mathematical formulation of the theory. The theory is about our description of events in laboratories.