It's not as though evolutionists have a single story to tell. They all have different ideas as to the manner and degree of evolution. They have no text to guide them other than their own observations, and no real authority other than their own opinions. As for myself, I prefer a single text that has stood the test of both time and technology, which lays out in basic terms where we came from and where we're going.
It's not as though evolutionists have a single story to tell.
I use the term scientist instead of evolutionists. And actually, they do have a single story to tell. Science being science, there are always unknowns and disagreements about details, but overall, by far, scientists tell the same story about evolution.
And I'd guess they agree much more than Bible interpreters agree in their interpretation of the Bible. I am sure they agree much more than Biblical creationists agree with non-biblical creationists.
But, alas, has no scientific content whatsoever...