Well, what would falsify creationism?
IMHO If science were to show that everything i.e. the universe, life and it’s diversity, beauty, morality, intelligence, love, etc... Were all just mechanisms of nature and served no ultimate purpose. We were spawn from nature by chance only to be swallowed by it, and that is all.
It would be ironic to discover that we developed intelligence from nature for no other reason than to make this dark discovery. (actually, for no reason what-so-ever)
What predictions does it make that, if contradicted in testing, would falsify the "theory of creationism" as it stands now?
If science could prove that we are just matter and energy – there is no higher purpose to our lives. We should live for life itself and reproduce so others can do the same.