english: Yet the assumptions that quantum theory needs to make in order to deliver those predictions are so mysterious that even Feynman himself was moved to remark, "If you think you understand quantum theory, you don't understand quantum theory."
non_english: Pa ipak, pretpostavke koje kvantna teorija mora da usvoji da bi ostvarila ta predviđanja su tako tajanstvena da je čak i sam Fajnman bio podstaknut da kaže, "Ako mislite da razumete kvantnu teoriju, ne razumete kvantnu teoriju." Toliko je neobična da fizičari pribegavaju jednoj ili drugoj