This implies that our response is secondary to the original environmental influence. We grasp this information, for instance, a combination of sounds, such as a melody, whisperings, noises, etc., all these sounds are not external to us, they exist only as we sense them. All our senses are likewise constructed. The external world could be endless in its range of colors, sounds, and even unknown influences. We are able to absorb only a small portion of what comes to us by way of our senses.
All scientific research is bounded by the five senses.
The Kabbalah speaks about what is possible to acquire with the help of a sixth sense and to experience the existence that is external to us. If a person experiences difficulties, he is then able to understand another person who likewise experienced similar troubles, because he has acquired the proper experience, feelings, and qualifications. There already exists within him everything needed in order to empathize with the other person. What differentiates people, species, all creatures, everything that exists is only in the ability to perceive that which is external to this or that influence originating from that segment beyond which there is no cognition. Investigating the external world, which we do not generally grasp, is founded on the equality of inner characteristics with outer manifestations.