### Syntropy and Sustainability

#### Abstract

In the 1920s the backward-in-time solutions of the fundamental equations of the universe were rejected as non-physical, since retrocausality was considered to be impossible. Then, in 1941, the mathematician Luigi Fantappiè noticed that the properties of these solutions are: energy concentration, the increase in differentiation and complexity, the reduction of entropy, the increase in cohesion and unity, the formation of structures and the increase in order. Listing these properties he remarked that they coincide with the properties of life, which the classical (time forward) approach is unable to explain. In 1942 Fantappiè published a small book titled: “*The Unitary Theory of the Physical and Biological World*” in which he suggests that the physical/mechanical world is governed by the forward-in-time solution and by the law of entropy, whereas life is governed by the backward-in-time solution and by a law symmetric to entropy which Fantappiè named syntropy (from the Greek words *syn* = converging and *tropos* = tendency).

The entropy/syntropy theory deals with energy and states that two transformations can effect energy: a forward-in-time transformation governed by the law of entropy and a backward-in-time transformation governed by the law of syntropy. Since energy is a fixed quantity which cannot be created or destroyed, but only transformed, the total amount of energy can be represented as the sum of energy in the syntropic state (concentrated) and energy in the entropic state (dispersed):

*Total Energy = Syntropic Energy + Entropic Energy*

Furthermore, because Energy is a constant value it can be replaced with the number 1 and the equation changes into:

*1 = Syntropy + Entropy*

which shows that entropy and syntropy are complementary polarities of the same unity:

*Syntropy = 1 – Entropy * *Entropy = 1 – Syntropy*

Entropic energy is governed by causality (causes that precede their effects) and it is for us visible, whereas syntropic energy is governed by retrocausality (effects that precede their causes) and it is for us invisible. The existence of two complementary forces, one diverging and one converging, one visible and one invisible, would be constantly at play in living systems and in its numerous forms of organization.

Since entropy is the tendency towards death, whereas syntropy is the tendency towards life, living systems in order to sustain themselves need to minimize entropy and to maximize syntropy. When entropy is high crises are experienced. When entropy is low crises diminish and wellbeing is experienced. According to this view, sustainability follows the syntropic rules which govern the invisible plane of reality and which Jung and Pauli named synchronicities.