The paper talks about how beliefs about what people know in society affect economic analysis. It argues that formal economic models, especially equilibrium analysis, do not really explain real-world causes and effects unless they are based on how knowledge is obtained and shared. A major focus is on foresight, which is how people predict future events, as an important part of various economic theories, like those dealing with risk and competition. The author suggests that to understand economic results, we must first look at why people might make mistakes or correct predictions. The idea of equilibrium becomes clearer when it is looked at in the context of individual actions rather than the interactions among many people. The paper also raises concerns that modern economic analysis has become too focused on formal logic, making it seem like math, which can ignore important cause-and-effect relationships in the economy. The author believes that improving economic theory should involve combining formal analysis with a better understanding of these causal processes.
The concept of equilibrium is meaningful when applied to an individual's actions, not just to the individual. It describes how different actions relate to each other within a single plan. For equilibrium to exist, a person's actions must be connected and considered in light of the same circumstances and knowledge. If a person's knowledge changes and they alter their plan, the relationship between their past and future actions is disrupted. Furthermore, since actions happen over time, time is a crucial factor in understanding equilibrium. It's important to recognize that equilibrium cannot be considered timeless, as many economists mistakenly suggest.
Equilibrium analysis was first created to show a balance between the actions of different individuals in society. However, using this concept for understanding how people interact in a competitive setting is not straightforward. The idea of equilibrium suggests that people’s actions should match their individual plans made at the beginning of a time period. For everyone’s plans to succeed, they need to have similar expectations about what will happen in the world. If individuals expect different outcomes, their plans can conflict, making it hard to achieve equilibrium. In a society where people exchange goods, their plans often depend on the actions of others, so these plans must work together. Traditional analyses sometimes assume everyone has the same information and will adapt their plans accordingly, but this overlooks important issues. The term "datum" also changes meaning, leading to confusion because it suggests that the same facts are known by everyone, which may not be accurate in social situations.
The concept of a datum is key to understanding many challenges in social sciences, particularly in economics. Datum means something given, but it's unclear to whom the facts are given—are they meant for the economist or for the individuals whose actions are being analyzed? This distinction is crucial because it separates objective data, known to the economist, from subjective data, perceived by individuals. When considering whether a society is in equilibrium, it's important to look at how individual plans align with each other. If all plans can coexist without causing disappointment, then society is in equilibrium. However, even if plans are compatible, there needs to be a correspondence between subjective and objective data to truly confirm equilibrium. If expectations are not met by actual outcomes, it can lead to disturbances, making it difficult to define changes in data clearly. Equilibrium can only be assessed if initial expectations align with what actually happens.
Equilibrium in a society means that the plans individuals have for their actions are compatible with each other. This state can continue as long as all members share the same expectations and the external conditions match. It doesn't require the external data to be completely stable or unchanging. Instead, equilibrium shows that individuals' foresight is correct; they base their plans on what they expect others will do. While everyone doesn’t need perfect foresight, their expectations must be accurate in relevant areas for their decisions. Equilibrium can be disrupted by unexpected changes, such as accidents or new inventions, which can affect the plans of individuals involved in production, like those building houses. If initial plans are incompatible, disruptions are inevitable.
The distinction between subjective plans and objective facts is important because it shows that people's plans often rely on shared experiences of reality. However, equilibrium analysis itself doesn't focus on how these plans correspond with facts; it assumes they do. This analysis cannot be based solely on external facts or only on individual subjective data since understanding people's actions requires both. The justification for studying equilibrium lies in the belief that there's a tendency toward it, meaning that people's knowledge and intentions may increasingly align. Yet, we lack clarity about the conditions and processes that lead to this tendency.
Equilibrium analysis often seems to suggest that the process leading to equilibrium is understood, but a closer look reveals that this is often based on assumptions rather than proof. One common assumption is the existence of a perfect market, where all participants have immediate access to complete information. This idea extends beyond individual markets to suggest that the entire economic system functions as one perfect market. However, assuming perfect knowledge does not explain how such a state is achieved. It simply defines equilibrium in a way that does not clarify the actual process leading to it. To assert that people can reach equilibrium under certain conditions, it is necessary to explore how they gain the relevant knowledge. This requires making justified assumptions about how knowledge is acquired through experience, rather than treating individuals as all-knowing. The difference between general assumptions about rational thought and specific hypotheses about how knowledge relates to the outside world is crucial in understanding real social processes, as knowledge acquisition is key to explaining economic behavior.
The discussion focuses on understanding the conditions under which people gain knowledge and how this process leads to equilibrium. It highlights the uncertainty surrounding the assumptions made about achieving equilibrium and the necessary conditions for it. Economists generally agree that the consistency of data is important, but the meaning of "data" is unclear, making this condition inadequate. "Perfect knowledge" is suggested as an additional factor, yet obtaining it is uncertain as individual preferences and actions change over time. This leads to the conclusion that the constancy of data does not guarantee people will correctly anticipate events or reach equilibrium. The complexity of these issues indicates that much remains unknown about the processes that lead to equilibrium, suggesting the need for a different approach to explore this central problem.
The discussion centers on the type and amount of knowledge people need for economic balance, known as equilibrium. It's important to recognize that equilibrium doesn't mean everyone knows everything. Instead, it introduces the idea of "relevant knowledge," which is the specific information that affects a person's choices. This concept goes beyond just the knowledge someone acts upon; it also includes knowledge that could change their decisions if they were aware of it. This brings up a comparison between dividing labor and dividing knowledge. While dividing labor has been studied for a long time, how knowledge is divided among individuals has not received as much attention in economics.
For equilibrium to happen, individuals must interact in ways that align prices with costs, each having different pieces of knowledge. However, many economic discussions make the assumption that everyone knows all necessary information, which avoids addressing the actual problem of identifying what specific knowledge is needed for equilibrium. Discussions often focus on knowledge about prices, ignoring the larger picture of how goods are obtained and used.
The main point is that for equilibrium to be reached, people need to have the knowledge they are likely to gain while trying to carry out their plans. This means that people might lack important information that could impact their decisions, leading to equilibrium based on limited knowledge. Although this situation can exist, it doesn’t represent the best possible outcome.
For a better distribution of resources, certain conditions must be met, like ensuring that several individuals know about different possible uses for available resources. Despite criticisms of current economic theories, it is acknowledged that economics has done better than other social sciences in explaining how bits of knowledge can work together for coordinated results. Finally, the analysis points out that equilibrium theory does not adequately address knowledge changes and the role of institutions, such as the press and advertising, which are important for understanding how the economy functions in real life.
Understanding the difference between empirical propositions and formal analysis is important for explaining real-world situations in equilibrium analysis. While new empirical research may not bring fresh insights, it is essential to know which factual questions matter for applying arguments effectively. In the past, some economists confused different types of propositions, making it hard to see how valid their claims were. The goal is to simplify the analysis and clarify how it relates to real life, highlighting the need for clear thinking amid complexity.