Suppose The Big Bang theory is the prevailing cosmological model of the observable universe from the earliest known periods through its subsequent large-scale evolution. The model describes how the universe expanded from a very high-density and high-temperature state, and offers a comprehensive explanation for a broad range of phenomena, including the abundance of light elements, the cosmic microwave background, and large-scale structure.
Can we infer that "The Big Bang theory has been proven beyond a doubt"? Yes, no, or maybe?