Human evolution is a theory there's no proof that we really came from monkeys. either our source of water, how water came up in our planet
if the planet was made base on big bang theory explaining.
Words and phrases must have precise operational definitions. All hypotheses must be testable. Evolution is testable. Creationism is not. If you have a "theory" as you say (what you really mean is "hypothesis" NOT "scientific theory") then it must be testable by others independently.