Good point. It is all deduction, and I guess that is what science is about: deduction, not proof. Regardless of whether or not an entity X experiences pain, w

Good point. It is all deduction, and I guess that is what science is about: deduction, not proof. Regardless of whether or not an entity X experiences pain, we can still objectively state that entity X responds negatively towards stimuli associated with the feeling of pain in ourselves.