We Built a Mini-Society in a Room. What Happened Next Will Surprise You.

Imagine a world where every choice you make—to give, to take, to trust, to doubt—ripples out and changes the reality for everyone around you. On September 18, 2025, we built that world.

I’ve always believed that the best lessons aren’t just read—they’re felt. I planned with a team and executed a live experiment based on Game Theory, focusing on Public good game.

The idea was simple: get a group of random people together and play a game about cooperation. We called it the Public Goods Game. Everyone starts with some money in form of tokens. You can choose to keep it for yourself ( expenditure on private goods) or contribute some to a public pot. The cool part? Every token in the public pot is multiplied (multiplier) , and the total is split equally among everyone—whether they contributed or not.

On paper, it makes sense for everyone to contribute. But people aren’t paper.

At the start, everyone was excited and happy to share on public goods. We all put money into the public pot and watched it grow. Because everyone was helping, everyone received more.

But then, things changed. One person put in less money, thinking, "I can still get the reward without giving as much." Other people saw this and thought, "That’s not fair. Why should I give if they aren’t?" So they also started giving less.

Soon, the public pot became much smaller. Because the pot was smaller, everyone got less tokens—even the people who had stopped giving.

This is exactly the problem we see in the real world: how do we make people care about helping everyone when it seems easier to only think about themselves?

So, we added a simple rule: if no one shared, then everyone would lose a little bit of tokens ( same as the government does by implying taxes). This wasn’t meant to be a punishment—it was just a way to remind everyone that we need to work together.

This whole experience really touched me. I didn’t just understand the public good game formula—Payoff = (Your Money - Your Contribution) + (Your Share of the Group’s Pot)—I felt what it meant. I saw it happening right in front of me, in people’s faces, in the way they paused, and in the times they chose to be kind.

And it left me with one question I’m still thinking about:

What would our communities be like if we made working together the simplest thing to do?