Two of the most common types of naturalism are: Metaphysical Naturalism: is the belief that nature is all that exists and all the things that are supernatural therefore do not exist. Methodological Naturalism: is the belief that the observable events in nature can only be explained by natural cause. This means not assuming the existence or non-existence of the supernatural. Additionally, consider that supernatural explanations for such events are outside of the scope of sciences. Within this type, we can find absolute methodological naturalism and contingent methodological naturalism.