The ancient principles of Yin and Yang have given rise to many philosophies, including those underlying modern passive and active fire protection. Yin and Yang have always been complementary forces, unseen (passive) and seen (active), that interact to form a greater whole as part of a dynamic system. Any attempt to eliminate one element in favor of the other has its risks, giving rise to the inevitable need and emergence of the missing element that restores balance. Such has been the case over the past decade in the effort to maintain a balanced approach to fire protection in all types of buildings.
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