If unexpected results are obtained and confirmed through repeated experiments, why must a model or ?

Question

If unexpected results are obtained and confirmed through repeated experiments, why must a model or hypothesis be abandoned or revised?

Answer 1

A hypothesis must be both testable and falsifiable. If a hypothesis is falsified, the opposite is not proven. For a hypothesis to become a theory, it must be supported by a large body of facts. If repeated experiments confirm unexpected results, then the hypothesis should probably be revised if there is any hope of it becoming a theory. This is the way that the scientific community advances scientific knowledge.