The scientific method is
all about ifs, buts and maybes. There are no proofs in science, only evidence, either for or against a hypothesis or theory.
So sure, I do not
know that "this" (not entirely sure what you are referring to here) works. But the hypothesis of evolution is borne out by the evidence we have. Importantly, the evolutionary hypothesis also make successful
predictions about what we may expect to find in future. So it is far from a case of just "interpreting" data to make it fit. We actually predict new data and then go and look for it - and find it. For example evolution predicts transitional fossils between forms and the age range of the rocks in which they might be found. And we find them.
Thus evolution predicted feathers on dinosaurs:
Feathered dinosaur - Wikipedia
And Bingo! we found them. We can see, from archaeopteryx etc, the transitional forms from dinosaurs to birds. So it makes immediate sense that we now find feathers on dinosaurs that are not birds as well.
And of course we now have new corroborations of kinship from DNA comparisons as well, which were not available at all in Darwin's day. This gives us another, quite independent, means of corroborating the theory.
So it will not do to pretend that the findings are all massaged to fit the model. There is far too much and it is far, far too consistent