Final answer:
A theory predicting unexpected outcomes can lead to a broader understanding or require modification. Theories and laws are considered valid until disproven by evidence. A theory is a well-substantiated explanation, subject to rigorous testing.
Step-by-step explanation:
If a theory predicts something other than what it was introduced to explain, it may be expanding our understanding by explaining a wider variety of observations or by explaining observations that were previously unexplained. Sometimes, these unexpected predictions can lead to the discovery of new phenomena or the refinement of the theory itself. In the scientific method, if an experiment does not verify a theory's predictions, the theory may be wrong and either needs to be modified or completely replaced. This is because scientific theories and laws are considered valid until disproven by experimental evidence. A well-substantiated explanation of an aspect of the natural world is known as a theory, and it must be capable of withstanding rigorous experimental testing to maintain its validity.