Even if there is only one possible unified theory, it is just a set of rules and equations. What is it that breathes fire into the equations and makes a universe for them to describe? The usual approach of science of constructing a mathematical model cannot answer the questions of why there should be a universe for the model to describe. Why does the universe go to all the bother of existing?
How shall Integrity face Oppression? What shall Honesty do in the face of Deception, Decency in the face of Insult, Self-Defense before Blows? How shall Desert and Accomplishment meet Despising, Detraction, and Lies? What shall Virtue do to meet Brute Force? There are so many answers and so contradictory; and such differences for those on the one hand who meet questions similar to this once a year or once a decade, and those who face them hourly and daily.
Tell the truth. If you tell the truth all the time you don't have to worry three months down the line about what you said three months earlier. Truth is always the truth. You won't have to complicate your life by trying to cover up.