The most definitive and sensitive part of every scientific article is its methods and materials section. That is because one of the hallmarks of science is its repeatability. Science gets its status as a guarantor of truth and fact by its ability to describe and document its causality.
Part of this comes from science sticking to linear causalities. But the essence of many complex systems is their inherent non-linear causalities. In fact, SPT identifies several different specific types of non-linear causality and their consequences (see SPIN-OFFs/Non-Linear Causality).