Which of the following is not a part of the growth relativity hypothesis?

Growth relativity refers to growth that is relative to its displaced condyles from actively relocating fossae. John C Voudouris introduced this concept to explain the possible effect of functional appliances on condyle and the resulting growth. The main foundations of growth relativity hypothesis  are: Displacement of condyle. Nonmuscular viscoelastic tissue stretch. Force transduction beneath the fibrocartilage of the glenoid fossa and condyle add new bone formation. Textbook of craniofacial growth, Sridhar Premkumar