Not so fast! You evidently think that everything that can possibly be known about this subject is already known. Nothing new can ever come to light. That seems a rather unseemly statement, coming from a scientist. There is no possible way you can know this for a fact, unless you claim to be some kind of seer.... But then you would not be speaking as a scientist.
I have no theory here. My belief about the past is the same one I have of the present, and of the future: The universe was created in a divine act, and is structured according to divine laws that are not completely deterministic, but leave room for change, development, and not least, human creativity and above all human freedom.
God is Truth, and so cannot lie. And His Truth is what sets us free, as persons and as creative agents. There is nothing in His creation that contradicts any of the other revelations He gave us (i.e., the Incarnation, the Presence of the Holy Spirit, the Holy Scriptures). The revelations are given, so that we may further explore them, thus to better know our Creator and His purpose in creating.
If your thinking is at all consistent with science, you will have a theory, or at least a conjecture.
Do you consider the vast array of geological observations to be unrelated pebbles, having no causal connection to each other or to history?