The biggest dilemma of Einstein’s life represents the search of a unified theory. Scientists all over the world are currently engrossed in the quest of a unified theory where we unify all the laws of physics, be it Quantum mechanics or the Classical physics: all the laws collated in one single framework which could predict anything and everything. Currently, we have multiple theories and suggestions for the unified theory but the very promising and compelling one is “the string theory.”
What is time? Why is it that time always move in forward direction? Is it only an illusion? All your questions on time answered.