The article discusses how economists shifted from Walras's general equilibrium theory to Hicks's temporary equilibrium theory in the early 20th century. They realized that to understand economic stability and fluctuations, time needed to be considered in equilibrium analysis. This led to the development of concepts like intertemporal and temporary equilibrium, focusing on planning over time. The researchers found that while the temporary equilibrium approach provided a more precise theory, it lost some of its innovative perspective compared to previous contributions from Austrian and Swedish economists.