Can you deny a theory? After all, it is just a theory.
Well how about this.
We can keep the theories which have so far matched evidence? Then if new evidence aroses, we can then come up with new theories.
Would that work?
And as to the next part of your question, yes, many theories can and have been disproven,
Evolution just isn't one of them. It's track record for predictive power has been too good so far.
Yeah, it is.