Sorry I am new to quantum physics. I am curious about what is the most accurate theory till now to predict quantum behavior. And I have several questions. 1. Is quantum field theory a "method" and can used universally in standard model? 2.What is the most accurate theory(or model) recently in particle physics? 3.What quantum phonomenons are now unexplained or sure againsting current models? 4.Is quantum eraser explained and can be predicted? I did not seen it at wiki "unsolved physics problems", but why is it againsting cusality? Or cusality isn't a necessary condition to quantum mechenics?