Abstract
The Geometric Algebra formalism opens the door to developing a theory
upgrading conventional quantum mechanics. Generalizations, stemming from
implementation of complex numbers as geometrically feasible objects in
three dimensions; unambiguous definition of states, observables,
measurements bring into reality clear explanations of conventional weird
quantum mechanical features, particularly the results of double split
experiments where particles create diffraction patterns inherent to wave
diffraction. This weirdness of the double split experiment is milestone
of all further difficulties in interpretation of quantum mechanics.