Problem of other minds

The problem of other minds is a philosophical issue that questions how one can know that other minds exist outside of one's own. It arises from the difficulty of inferring the mental states, thoughts, feelings, and experiences of others, as these are inherently private and subjective. The challenge stems from the fact that we can only directly access our own thoughts and feelings. We rely on external behaviors, language, and expressions to make inferences about what others might be experiencing or thinking.