One property of true science is that it must be falsifiable. That means there must be ways to prove a theory is false if, indeed, it is false.
For the White Swan Theory, if even one black swan were to be found, it would falsify the theory and it would have to be either abandoned or modified.
After 150 years of testing, there has been no alternative theory advanced or test conducted that would falsify evolution. All predictions made by evolution that can be tested have be shown to be true.
Creationism as a science has already been falsified. Prior to 1800, every scientist was a creationist, because that's all there was. But when fossils and rock layers started to be studied in detail, all over the world, the conclusions of those creation scientists were that creation was falsified by the evidence.
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