Scientific theories are not the same as mathematical theories or theories of logic.
They are affirmative but not demonstrable. There is no such thing as a scientific theory that can be contradicted. There are no proofs in science only strong or weak evidence. Facts don't contradict anything. They are just states of affairs, determined only by accident and circumstance.
"There is no such thing as a scientific theory that can be contradicted. "
One of the main criterion for a system of principles to be elevated to the high status of scientific theory is that they must be able to be falsified.
Find a human skeleton in the same strata as dino bones and you would falsify evolution.
Your statement just doesn't reflect the realities of how science defines theory.