If you can never prove that God Exists, you can never know whether Evolution is true or Creationism is true.
This is because Science may give evidence of Evolution, but that does not prove that Creationism is not true ----------------------- because as my Prof. Jim Slagle who is a PhD in Computer Science said,
proof that evolution exists does not prove that Creationism is not the way it happenned in the first place.
But look up the Eastern concept of the "Ayurvedic Man". Are you sure that Jesus Christ in his missing years did not visit India and learn a lot of things in Tibet.
(This was an idea given to me by a White American, J.Zdunich while I was in the USA).
So until you are all-knowing, I can give you proof that Evolution or Creationism took place, and you still don't know if there is an additional layer of truth.
So become God (which it is not possible) and then you will know.