Kaluza-Klein mechanism was rejected for inconsistencies due to the

Planck length scale.

Nelson derivation of Quantum Mechanics was rejected for having assumed,

without justification, a multivalued action and the presence of

universal fluctuations. Both the mechanisms can be reinterpreted without

problems at the light of the guiding center (for Kaluza-Klein) and

gyrocenter (for Nelson) transformations. It is demonstrated that with

the use of guiding center coordinates the fields follow an Einstein’s

equation on the phase-space extended to time and Gravitation includes

electromagnetism if considered on such extended phase space. Once

electromagnetic (now also gravitational) fluctuations are considered it

is shown that the gyrocenter follows the Schroedinger equation. It is

proposed to explaining the discrepancies between GR and QM in the

simplest way: they are describing different objects (guiding center and

gyrocenter, respectively) that are both representative of charges and/or

masses. In this way a unified theory is accessible and it can be

depicted without inconsistencies.