It's addressing the idea of externalism, and how one's reality is effected by the senses. How something can feel so real and understood, but not all of your senses necessarily line up on this. Also it's never stated that he can actually taste, see, smell, hear, or feel it. It's just that it feels, or seems that way to him. With this in mind he is never able to actually grasp it because he's not even sure if it's real.
It's addressing the idea of externalism, and how one's reality is effected by the senses. How something can feel so real and understood, but not all of your senses necessarily line up on this. Also it's never stated that he can actually taste, see, smell, hear, or feel it. It's just that it feels, or seems that way to him. With this in mind he is never able to actually grasp it because he's not even sure if it's real.
@robnat sorry, existentialism, not externalism.
@robnat sorry, existentialism, not externalism.