Final answer:
One response to the objection that brain states are not private in the same way mental states are is to argue that brain states can have a subjective or private character as well. Another response is to emphasize the complexity and diversity of brain states. These responses highlight the subjective and unique nature of mental states.
Step-by-step explanation:
One response to the objection that brain states are not private in the same way mental states are is to argue that brain states can have a subjective or private character as well. For example, we might argue that certain brain states can give rise to experiences that are only accessible to the individual, such as the subjective experience of pain or pleasure. Additionally, it can be argued that even though brain states can be observed and measured by others, the subjective experience and interpretation of those brain states are unique to the individual.
Another response is to emphasize the complexity and diversity of brain states. While it is true that brain states can be observed and measured, the specific combination of brain states that make up an individual's mental state at any given moment is highly complex and unique to that individual. Therefore, even though brain states can be shared and observed, the individual interpretation and experience of those brain states can still be considered private.
Overall, these responses highlight the subjective and unique nature of mental states, even if they are correlated with observable brain states.