english: Well, it turns out that Einstein and Kaluza and many others worked on trying to refine this framework and apply it to the physics of the universe as was understood at the time, and, in detail, it didn't work.
non_english: No, ukazuje sa, že Einstein, Kaluza a mnohí ďalší sa ju pokúšali zdokonaliť a použiť na fyziku vesmíru, ktorá bola známa v ich čase a - v detailoch - to nefungovalo.