Syntropy 2007, 1, pag. 147-158 ISSN 1825-7968 www.sintropia.it 147 The Vital Needs Model Ulisse Di Corpo 1 Abstract In 1977 the author developed a Vital Needs Model which required an independent property, symmetrical to entropy, which is here named “syntropy”. According to this model syntropy could not be a product of the laws of the macroscopic world, as all the laws of the macrocosm are dependent on entropy. For this reason the author searched evidences of the property of syntropy at other levels, finding, at the quantum mechanic level, equations that always yield a positive solution, retarded waves which move forward in time, and a negative solution, advanced waves which move backward in time. In 1941 the mathematician Luigi Fantappiè demonstrated that advanced waves concentrate energy, produce differentiation and structures, and show qualities which are identical to those which can be observed in living systems. In this way, Fantappiè arrived at the conclusion that living systems are a manifestation of causes originated in the future (retrocausality). 1 ulisse.dicorpo@gmail.com