No two persons have identical experiences. I see you, and you see me. I experience you, and you experience me. I see your behavior. You see my behavior.
Natural science knows nothing of the relation between behavior and experience.
That is to say it is not a scientific problem. There is no traditional logic to express it. There is no developed method of understanding its nature. Valorizing scientific objectivity is also a choice made by a people at a particular stage in its history.