Which of the following statements about scientific theories is not true?
A theory can never be proved beyond all doubt; we can only hope to collect more and more evidence that might support it. B) A theory is a model designed to explain a number of observed facts. C) Scientists cannot take a theory seriously if it contradicts other theories developed by scientists over the past several hundred years. D) A theory must make predictions that can be checked by observation or experiment. E) If even a single new fact is discovered that contradicts what we expect according to a particular theory, then the theory must be revised or discarded.
