If a scientist took off the top of your skull and looked inside your brain while you were eating the chocolate bar, all he would see is a grey mass of neurons. If he used instruments to measure what was happening inside, he would detect complicated physical processes of many different kinds. But would he find the taste of chocolate? It seems as if he couldn't find it in your brain, because your experience of tasting chocolate is locked inside your mind in a way that makes it unobservable by anyone else--even if he opens up your skull and looks inside your brain. Your experiences are inside your mind with a kind of insideness that is different from the way that your brain is inside your head. Someone else can open up your head and see what's inside, but they can't cut open your mind and look into it--at least not in the same way." (Nagel, "The Mind-Body Problem," p. 29-30, original text pagination).

The scientist won't be able to find the product in the brain as this is due to the fact that the experience of tasting chocolate is restricted to the mind making it unnoticeable by anyone-after opening the skull and observing it.

Experience are locked to the mind just the way the brain is locked to the skull. It is possible to open the skull and observe it but it is not feasible to cut the mind open and observe it in that same fashion.

Let's say the scientist went further to lick the brain while you eating the chocolate. He will more that the brain does not taste like chocolate and if it does he can't get the actual experience the individual derive from his own mind as the experience and mental state is not equal to the physical state of the brain indicating more to a person than brain and nervous system as it as to do with one assessment on subjective facts.

The possible conclusion is there is a soul attached to the body which allows for interaction explaining further that man is made up of two distinct things which are a complex physical organism and a wholly mental soul (dualism). Thus, facts on conscious experience are typically subjective and can wholly be judged from the first-person perspective on the conscious topic (Thomas Nagel (1937-)).

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