Answer and Explanation:
The phrase shown in the question above shows that a reliable measurement is not always valid. This happens, because many times, even if a measurement is made using efficient and precise tools, which show a correct and reliable result, the result is not enough to explain a situation and it is not even able to apply the situation in a coherent way.
However, a valid measurement is always reliable, because if a measurement can be imposed on a situation and can completely clarify it, it means that it is reliable, because it shows a correct result in relation to something.