Property Dualism Argument

According to the Leibniz's princciple of the indiscernibility of identicals, the philosopher Gottffried Leibniz argues that if 1 and 2 are identical then they have exactly the same property. It means that mind can never be physical object, which is a fact that could be derived here. Additionally the arugument is that no machine or computer in the world can have conscious, i.e., feel of pain, feeling of happiness, sad etc., But by incorporating some additional algorithms and hardwares these computer can be made to act as a conscious object. Hence, the final fact is a physical object can never be conscious. Hence mind is not a physical object
Argument 4: Doubt and existence According to Descartes he agues his own existence based on his dream and he led the premise as follows,
A) I can doubt that I have a body.
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i) Princess Elizabeth's problem: According to property dualism how a two physical properties of the brain can give raise to a nonphysical properties of the brain? However since we accept the causal interactive between two physical objects, why can't we accept the relation between physical and nonphysical object? ii) The explanatory completeness of physiology: It can be arguable that actions such as running away from the lion is always because of muscle contractions and neuron discharges. But according if every events of human action is explained in such physical senses then it means that their no role of nonphysical object in human actions. Thought the epiphenomenalism is on favouring edge of the above explanation, it avoid the objection form the explanatory completeness of physiology termed in item 2 and 3. 2. Some mental states cause actions.
3. some mental states cause other mental