📈 economics

The Role of Characters and Productivity for Economic Inclusiveness in Decentralized Economies: An Agent-Based Model

This paper utilizes an agent-based model to demonstrate that while extractive characters may boost short-term economic performance by eliminating low-productivity agents, they ultimately undermine long-term economic inclusiveness in decentralized markets, highlighting the critical need for generative characters to sustain collective prosperity.

Original authors: Leonardo Becchetti, Demetrio Bova

Published 2026-07-09

📖 5 min read🧠 Deep dive

CC BY 4.0

Original authors: Leonardo Becchetti, Demetrio Bova

Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). ✨ This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer

Imagine a small, isolated island where everyone has to trade with their neighbors to survive. There is no government, no central bank, and no one handing out extra food. Everyone produces something (like fish or fruit) and needs to buy something else to eat. The only rule is: if you can't afford enough food to stay alive, you leave the island forever.

This paper runs a computer simulation of this island to see how different personalities (called "characters") affect whether everyone survives or if the population crashes.

Here is the story of what the simulation found, explained simply:

1. The Two Types of Personalities

The researchers gave the islanders two main types of "characters" or habits:

The "Generators" (Generative Characters): These people are like good neighbors. They try to keep prices fair, they don't hoard extra food, and they are willing to help others survive. They care about the group staying together.
The "Takers" (Extractive Characters): These people are like opportunistic neighbors. They use their power to get the best deal for themselves.
- The "Power-User": If they have a lot of food, they raise prices to make more money.
- The "Merit-Meritocrat": They believe that because they are better at making things (more productive), they deserve to take a bigger slice of the pie. They think, "I made 10 fish, so I should get paid more than the guy who made 5."

2. The Big Surprise: "Good" vs. "Bad" Economics

The simulation tested what happens when everyone on the island has the same personality.

If everyone is a "Generator": Almost everyone survives. The island is inclusive. However, the average amount of food produced isn't super high because no one is pushing to extract every last bit of profit.
If everyone is a "Taker": The island becomes a ruthless competition. The "Takers" use their power to squeeze the others. Many people starve and leave. The survivors are the ones with the highest productivity, but the total population crashes.
The Trade-off: The paper found a painful trade-off. The more the islanders act like "Takers" (trying to get the biggest share based on their skill or power), the fewer people survive. The more they act like "Generators," the more people survive, even if the total wealth is slightly lower.

3. The "Hybrid" Disaster (The Most Important Finding)

The most dramatic result happened when the island had a mix of both types of people.

The Trap: In the beginning, the "Generators" try to be nice and keep prices fair. The "Takers" see this and say, "Great! I can buy cheap from them and sell high to others."
The Squeeze: The "Takers" slowly eat up the resources. Because they are smarter about grabbing the surplus, they survive longer. The "Generators," who are trying to be fair, get pushed out of the market because they can't compete with the ruthless pricing of the "Takers."
The Collapse: Eventually, the "Generators" all leave the island. Now, only the "Takers" are left. But here is the twist: The "Takers" can't survive without the "Generators" to exploit. Once the nice neighbors are gone, the "Takers" start fighting each other, prices go crazy, and the whole island population collapses rapidly.

The Lesson: Being a "Taker" is a smart move for you individually in the short term, but it is a disaster for the whole group in the long run. The system naturally selects for the "Takers," which eventually kills the system.

4. The "Merit" Trap

The paper specifically looked at the idea of Merit. In our real world, we often think, "If you work harder or are more skilled, you deserve to earn more."

The simulation showed that when people act on this belief (charging higher prices because they are "more productive"), it actually hurts the poor. The "Merit" logic becomes a tool for the rich to take even more from the poor.

The Paper's Definition of True Merit: The authors argue that true merit isn't just "making more." It's making more than you consume. If you produce 100 units but eat 100 units, you haven't helped anyone. If you produce 100 and only eat 80, you have created a surplus for the community.
The "Takers" produce a lot but consume even more, leaving nothing for others. The "Generators" produce a lot but limit their own consumption, leaving a surplus for the group.

5. The Conclusion: Character is Policy

The paper concludes that you cannot rely on a free market to fix this on its own. If you just let people do what is "rational" for themselves (grab the biggest share), the system will eventually break.

To keep the economy inclusive (so everyone can survive), we need to cultivate better characters. We need to encourage habits of:

Restraint: Not consuming everything you produce.
Fairness: Not using your power to squeeze others.
Generosity: Understanding that your success depends on the survival of your neighbors.

In short: A decentralized economy (like a free market) is like a garden. If you plant only "Taker" seeds, the garden will look lush for a moment as the strongest plants choke out the weak, but then the soil will die and everything will wither. To keep the garden alive, you need to plant "Generator" seeds that care for the soil, even if it means they don't grow as tall as the weeds. The paper argues that "character" is the seed, and without it, the economy cannot survive in the long run.

Technical Summary: The Role of Characters and Productivity for Economic Inclusiveness in Decentralized Economies

Problem Statement
Contemporary economic analysis often treats preferences and behavioral dispositions as exogenous and normatively neutral, focusing instead on incentives and institutional frameworks. However, rising income inequality and stagnating living standards in many economies suggest that the mechanisms organizing access to surplus, rather than the volume of production itself, are the core drivers of deprivation. This paper investigates whether the distribution of "characters"—defined as persistent preferences, habits, and behavioral dispositions governing pricing, purchasing, and consumption—fundamentally shapes economic inclusiveness in decentralized market economies. Specifically, it examines the tension between "extractive" characters (which leverage market power or productivity-based entitlement to appropriate surplus) and "generative" characters (which orient behavior toward the common good), and how these interact to determine collective survival at adequate living standards.

Methodology
The study employs an Agent-Based Model (ABM) designed as a decentralized survival game. The model abstracts from technological change, capital accumulation, credit, and centralized redistribution to isolate the effects of character-driven micro-rules.

Environment: A spatial grid (50×50) with 150 agents. Agents are heterogeneous in productivity ( $K$ ) but identical in other structural aspects. They produce one good and consume another.
Survival Constraint: Agents must consume a minimum subsistence level ( $m_0$ ) to survive. Failure to meet this threshold results in permanent exit. The model tracks "economic inclusiveness" as the percentage of the population surviving at adequate living standards.
Character Operationalization: Characters are implemented as specific heuristic rules for three decision domains:
1. Seller Pricing Rules:
  - Zero-markup (Reproduction): Prices set to maintain living standards.
  - Sell-seeker: Prices lowered to clear inventory, bounded by reproduction costs.
  - Gain-seeker: Prices raised to maximize income, lowering only if sales are insufficient (opportunistic).
  - Merit-seeker: Prices raised proportionally to relative productivity (meritocratic markup).
2. Buyer Selection Mechanisms (BSMs): Rules for choosing trading partners, including lowest-price, lowest-consumption (pro-social), lowest-income (redistributive), highest-productivity (merit-based), and random selection.
3. Consumption Rules: Governed by "temperance" (speed of adjusting consumption to abundance) and "merit caps" (limiting consumption to a fraction of productivity).
Simulation Protocol: Simulations run for up to 500 turns. Results are averaged over 40 independent repetitions for both homogeneous (single character type) and hybrid (mixed character types) populations.

Key Contributions

Reconceptualizing Merit and Power: The paper challenges the standard economic view that meritocratic entitlement (higher productivity justifying higher surplus share) is inherently efficient or fair. It argues that when merit is translated into surplus appropriation via pricing or selection rules, it functions as a mechanism of exclusion.
Character as Capital: It posits "character" as a form of civic and behavioral capital that determines how productivity is translated into surplus appropriation. Unlike standard models where preferences are fixed, this model treats character as the primary driver of systemic outcomes in the absence of institutional correction.
Survival-Based Surplus: Moving away from marginalist surplus definitions, the model adopts a classical surplus tradition where surplus is the physical excess of production over subsistence. This allows for the analysis of viability and exclusion independent of equilibrium price mechanisms.

Results
The simulations yield five primary findings supporting the paper's hypotheses:

Non-Neutrality of Character (H1): Economic outcomes are not neutral regarding character distribution. There is substantial dispersion in survival rates (from ~10% to 100%) across different character configurations, even with identical aggregate productive capacity.
Trade-off in Homogeneous Economies (H2): In homogeneous populations, a systematic trade-off exists between extractiveness and inclusiveness.
- Extractive configurations (Gain-seeker and Merit-seeker pricing) lead to lower survival rates (often <40% for gain-seekers) but higher average productivity among survivors due to the elimination of low-productivity agents.
- Generative configurations (Zero-markup, Sell-seeker) sustain near-universal survival (95–100%) but with lower average productivity among survivors.
- Mechanism: Productivity-based selection acts as the filter; higher productivity correlates negatively with economic inclusiveness because it accelerates the exit of less productive agents.
Evolutionary Selection in Hybrid Economies (H3 & H4): In mixed populations, extractive characters systematically prevail over generative ones. Generative agents are eliminated first because they do not reciprocate the access-preserving behavior of extractive agents. As the population becomes dominated by extractive agents, the system collapses rapidly (survival drops to ~5% by turn 50), despite the remaining agents having high productivity.
Individual vs. Social Rationality (H5): Being extractive is strategically rational at the individual level (higher survival probability in the short term) but socially destructive (leading to systemic collapse). Decentralized markets alone are insufficient to ensure long-term economic inclusiveness.
Role of Consumption Caps: The presence of "merit caps" (limiting consumption to productivity) and temperance significantly improves survival rates, suggesting that limiting the translation of abundance into consumption is crucial for inclusiveness.

Significance and Claims
The paper concludes that the long-term viability of decentralized market economies depends fundamentally on the distribution of characters. It argues that:

Market Failure via Character Neutrality: Assuming all characters are equally valid leads to a specific market failure where extractive behaviors, though individually rational, erode the conditions for collective survival.
Merit Redefined: The paper redefines merit not as entitlement to a larger share of surplus, but as the net contribution to the common good (producing more than one consumes). Under the conventional definition of merit (productivity = entitlement to surplus), the system generates exclusion even under conditions of abundance.
Policy Implication: Cultivating "generative characters"—dispositions of restraint, reciprocity, and concern for others—is presented not merely as a moral imperative but as a necessary economic policy. Since decentralized markets do not automatically preserve these traits, their cultivation is central to preventing the transition from inclusive institutions to extractive dynamics.
Limits of the Model: The authors explicitly state that the model isolates character effects by holding institutions and incentives constant. Therefore, the results do not prescribe specific incentive structures but rather identify which behavioral dispositions are structurally compatible with inclusion. The paper suggests that without the cultivation of generative characters, redistributive policies and technological progress may be insufficient to sustain broad-based prosperity.