The Social Inequality Wealth Model: 2D Bars

Overview of the Model

The Social Inequality Wealth Model is a physics-based simulation that represents a simplified social system where wealth exchange occurs among agents. This model uses a 2D bar representation to visualize the distribution of wealth across two groups, allowing for an intuitive understanding of economic dynamics and inequality.

By manipulating various parameters such as bet size, luck bias, discrimination, redistribution rate, and initial conditions, users can observe how these factors influence the overall wealth distribution and the resulting social inequalities.

Key Concepts: Gini Index and Lorenz Curve

The Gini index is a measure of statistical dispersion intended to represent income or wealth inequality within a nation or a social group. In this model, it quantifies the degree of inequality in the distribution of wealth among agents. A higher Gini index indicates greater inequality.

The Lorenz curve is a graphical representation of wealth distribution where the cumulative percentage of total wealth is plotted against the cumulative percentage of population. The further the curve deviates from the line of equality, the more unequal the distribution of wealth.

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Influence of Parameters

The model allows users to adjust several parameters that significantly impact the dynamics of wealth exchange and inequality. For instance, changing the bet size affects how much each agent can gain or lose in a single transaction, while luck bias introduces randomness into the outcomes of these transactions.

Discrimination sliders allow for the simulation of unfair treatment based on group membership, which can lead to persistent inequalities over time. Conversely, adjusting the redistribution rate enables users to explore the effects of government policies aimed at reducing inequality.

Real-World Applications

This model provides insights into real-world economic systems and helps in understanding how different policies can affect wealth distribution. It is particularly relevant for studying issues such as poverty, social mobility, and the impact of market forces on inequality.

By observing the evolution of the Gini index, Lorenz curve, and wealth histogram over time, users can gain a deeper appreciation of the complex interplay between individual actions and systemic factors in shaping economic outcomes.

Frequently asked questions

What does the wealth histogram show?

The wealth histogram displays the distribution of wealth among agents, showing how wealth is spread across different levels. It provides a visual representation of the Gini index and helps in understanding the overall inequality within the model.

How can discrimination be introduced into the model?

Discrimination can be introduced by adjusting the 'discrimination for group A' slider, which biases the outcomes of transactions against agents from a specific group. This parameter allows users to simulate scenarios where one group is systematically disadvantaged in wealth exchanges.

What does the Lorenz curve tell us about the model?

The Lorenz curve illustrates how evenly or unevenly wealth is distributed among agents. A perfectly straight line represents perfect equality, while a more curved line indicates greater inequality. The further the curve deviates from this line, the higher the Gini index and the greater the observed inequality.

How does changing the initial inequality affect the model?

Adjusting the 'initial inequality' parameter allows users to start with a pre-defined distribution of wealth. This can significantly impact how quickly or slowly the overall inequality changes over time, as well as the dynamics of wealth exchange among agents.

Try it live

Everything above runs in your browser — open Social Inequality Wealth Model: 2D Bars and change the parameters while it is running. Nothing is installed, nothing is uploaded, the whole model lives in one tab.

▶ Open Social Inequality Wealth Model: 2D Bars simulation