You're playing with words (how would you like to define "good"),
but the bottom line is that any theory can be wrong.
Eratosthenes proved the world is flat theory wrong
he was wrong
nothing.
In a word; no.
We can proof that newton wrong because some of his theory was proofed wrong.
Lots of people have wrong theories about the Universe.
I think that this theory is true only for some people. For Christian people, this theory are wrong, because they believe that people is God's creation.
Louis Pasteur
Evolution, Atomic Theory
The theory of the good is a philosophical concept that seeks to define what is considered morally right or valuable. It impacts ethical decision-making by providing a framework for individuals to determine what actions are morally right or wrong based on the perceived good or value of the outcome.
Everyone who's ever had a theory has been wrong in some way; it's just we don't know if the current one is wrong yet. This is called the Scientific Method.
Proof of it being wrong or another improved and better theory.