One should not increase, beyond what is necessary, the number of entities required to explain anything.



This principle is part of epistemology, and can be motivated by the requirement of maximal simplicity of cognitive models. However, its significance might be extended to metaphysics if it is interpreted as saying that simpler models are more likely to be correct than complex ones, in other words, that "nature" prefers simplicity.



iba tolko som chcel napisat.