this jibe is an example of science illiteracy re proof no theory in science is proven all theories in science prove useful and a theory is used only until a more useful more accurate or more widely applicable theory comes along to replace it relativity did not disprove newtonian physics as newton used it re big bang no other theory of the universe explains as many different observations with as much accuracy and internal consistency and matches observations made after the theory was stated as the theory of the singularity in other words it s tremendously useful