Causality in Water-Energy and Food nexus: A toy-model multitasking stochastic synthesis, highlighting the complexity and randomness in decision making

The water, energy, and food nexus underscores the intricate interdependence among these vital resources, highlighting the need for integrated and rational management. Balancing the synergies and trade-offs within this nexus is crucial for addressing global challenges related to resource security, environmental management, and societal well-being. While the elements of the nexus are interdependent, various parameters hinder their causal connections. In this study we create a stochastic toy model which links each part of the nexus to the other based on Hurst-Kolmogorov dynamics. The introduction of simple environmental and social variables to these interdependencies alters the model dynamics of the nexus. In this way, we observe that despite the apparent causality in the dependencies of the nexus, the complexity of the system does not reveal causation. Therefore, as the nexus is vital for social prosperity, we must explore other methods for decision making.