We are born with five senses. Each of them has a certain range of perception, within which all of our reactions to outside influences are registered. We do not perceive all the waves that exist around us, but only those within the frequency range of, say, between 15 Hz and 15 KHz. All our other senses work the same way.
We are made in such a way that the world appears to us within the limits of our five areas of perception. If we had additional sense organs with different perception areas, our picture of the world would be totally different. This is a picture that appears to us as a result of our reaction to some outside influence. Waves (the Upper Light) exist on the outside. Out of all these waves we pick up only an insignificant portion, a small impression within a certain frequency range.
We are powerless to change the innate sense organs of our body; therefore we perceive our world as one unchanging picture. If we had a sense organ that could change, we would have perceived through it a changing world.