[…] Everything that exists in all realms of the universe can experience existence in one of only two ways. That would be defined as a long wave cycle and a short wave cycle. Going back to your previous question about why humans are “entrapped” in physical existence, which, of course, is voluntary and chosen, this was due to the
desire to change from the long wave cycle experience of completely – what you would call – ethereal or spiritual existence, to the short wave cycle of what you call physical existence. The difference is that a long wave cycle involves only very gradual change in evolution in a cyclical manner. Whereas a short wave cycle involves a duality. And this is the case with souls in physical bodies as is experienced on this earth plane because the soul experiences an ethereal state for half the cycle and a physical state for the other half of the cycle. While these halves are not measured in time the way you measure time, the totality of experience is equal in each half. The necessity to form the short wave cycle was brought about through nature through the natural bounds of the universe when the group mind of souls chose to experience physicality as opposed to a completely ethereal existence.