The effectivity of the Feng shui reading will often depend on the depth of knowledge of the Feng shui consultant that you employ. A Feng shui consultant who can provide readings and cure in a whiz may not often be the right consultant. When the readings are done without the aid of a Feng shui compass, start asking questions because the effectivity of Feng shui designs hangs largely on the accuracy of the reader. There are occasions though that you cannot arrive at an open position in the classroom that is in accordance with your bagua map. This may be due to the limitation of space, the basic design and structure and the positioning of the classroom. If this is the case, you can still arrange the classroom in the conventional style that has rows of desks arranged one in front of the other and in a lined way. But then again Feng shui, if it will be employed to affect the lives and future of those who wants to benefit from it, should take it to a deep level that only expert Feng shui consultants could provide. For professional work, remember that subtleties and variables are largely dependent and as widely varied as the person sitting beside you to the next. Whenever possible, workers and managers must be sitting with a solid wall behind them. It is never advisable in Feng shui office design to sit behind a glass window. If this cannot be avoided, a poster or painting of a mountain will have to cover the glass window to provide a symbol of solidity and rigidity. It also gives an assurance to start with something that is closely similar to what a person currently believes in. Feng shui crystals, for its entire oriental connotation has similar uses in many other parts of the world. It was used in ancient times for its healing qualities. A myth even extends its usage in Atlantis. For this reason, the zones with values 8, 1 and 6 lies on the jamb that holds the door. The door also has its own numerical value as with the people living inside those doors. Mapping out the area according to the bagua will require additional knowledge of the numerical values of the person or persons behind the door to get the most benefit form the energy that are flowing through it.