Core Viewpoint - The article discusses the evolution of economic thought through paradigm shifts and integrations, emphasizing that each theoretical change in economics occurs through these two stages, which is distinct from the natural sciences [19]. Group 1: Paradigm Shifts in Economic Thought - The first paradigm shift in economics occurred in the 1770s, marked by the publication of Adam Smith's "The Wealth of Nations" in 1776, which transitioned the focus from "wealth management" to "wealth production" [20]. - The second paradigm shift took place in the 1870s with the rise of the marginal utility school, which challenged the classical economics' labor theory of value and introduced the "subjective value" paradigm [43]. Group 2: Paradigm Integrations in Economic Thought - The first paradigm integration occurred in the 1840s with John Stuart Mill's "Principles of Political Economy," which combined the "wealth management" and "wealth production" paradigms into a complementary theoretical framework [32]. - The second paradigm integration happened in the late 19th century with Alfred Marshall's "Principles of Economics," which synthesized classical economics' "objective value" and the marginal utility school's "subjective value" into what is known as "neoclassical economics" [51][52].