The hierarchy problem follows from the very big energetic gap between the Planck scale and the masses of the most massive known particles. This problem is solved within the Scale-Symmetric Theory. This theory starts from the four succeeding phase transitions of the superluminal non-gravitating Higgs field composed of pieces-of-space/tachyons (due to the size of our Cosmos, there are possible four transitions only). There appear the very different scales i.e. the superluminal-quantum-entanglement scale, luminal Planck scale, electric-charges scale and cosmological scale. Due to the irreversible processes during the inflation, the electron-neutrinos and muon-neutrinos are the stable particles. The observed oscillations follow from the decays or creations of the unstable tau “neutrinos” that consist of three different stable neutrinos and from the exchanges of the free neutrinos (they interact gravitationally only) for the neutrinos in the neutrino-antineutrino pairs the Einstein spacetime consists of.