Through the studies I have done, I've come to believe that energies flow down from heaven and they also flow up from the earth. We measure the construction cycle from when the roof seals off the house so that heavenly chi no longer is able to flow into the house.
Depending on when the roof seals off the house, the energy distributes in different parts of the house in ways that can be determined by seemingly complex calculations. They really aren't complex once you learn how to do them. One of the main determinants of how the energy distributes in a house is the direction the house faces and sits. This facing direction and sitting direction is, according to diamond feng shui the direction that the door faces. Through my studies, I've come to believe that the direction a house faces cannot be determined by the direction the door faces, but instead by other factors that Marie discusses in her latest newsletter.
Without a compass there is no feng shui in the traditional sense. Other forms of feng shui that don't use a compass have come along in modern times, but I don't believe they can accurately map the energy blueprint of a house. This is my opinion.
On the other hand, feng shui in the most basic sense is controlling the environment to create balance. One feng shui master was quoted as saying that if we feel uncomfortably warm in our house, and we turn on the air conditioner, we become a feng shui master.