Okay, let's state the argument from basics.
Science serves two purposes, to know how to engineer the world to get it to do what we wish to do, and to help us gain new understanding of the world.
Evolution or creationism, or for that matter, any statement of what happened thousands of years, serves no purpose in helping us engineer the world today. Whether God created the world, or the big bang did, and whether it was a billion years ago, or six thousand years ago, means nothing if we know how the world works today. So, this part of science must be to help us gain understanding of the world.
What we have is several competing theories, normally summarized by two extremes, called creation and evolution. If we are to use them to teach people to gain new understanding of the world, then learning the supposed facts of either theory is irrelevant, until we learn to take these assertions and prove them out one way or the other.
And that is what my first post claimed. Either theory can give us something to prove or disprove.