If I make a claim, based on empirical evidence, that itself invokes the existence of unobservable entities (e.g., those which are very small) am I making a supernatural claim? For example, if I claim that there are tiny elephants which act as the smallest building blocks of all that exists, is this supernatural or is it simply a scientific claim, given that we currently do not possess the means to observe existence at this level but we might eventually develop such means?