What are the difficulties caused by the misunderstandings of the difference between Mind and Brain? The difficulties created by the conflict between the competing worldviews of a Monism and a Dualism are that Monists typically claim that only Science is credible for human knowledge. Thus, adopting the worldview termed "Ontological Naturalism" they claim that only Matter, Energy, Space and Time exist, and only those things researched by Science can be regarded as that which exists. That eliminates many identities that people in all cultures and countries throughout history have regarded as real. For example, if philosophical Monisms, such as Ontological Naturalism is true, then it is false that any Abstract Conception such as Good & Evil, or Rights and Abuses exist. All of human Law and Morality would have to be entirely discredited as meaningful, because none of these Abstract Conceptions are logically consistent with the Scientific Theory of Natural Selection and the Scientific Theory of Evolution.
Also, "Ontological Naturalism" must be examined in the very real possibility that it is a
Self-Refuting worldview; because Mathematics and its Numbers have Abstract Conceptions
(1, 2, 3, 4, 5, 6, 7, 8, 9, and 0) for its basis. If these do not exist therefore, their logical relations are to be dismissed, and they are deemed the basis of all Science, then Science itself must be discredited.