https://touchingfish.top/en/tags/environment-feedback/Recent content in Environment-Feedback on TouchingFish.topHugoenMon, 19 Jun 2023 00:00:00 +0000https://touchingfish.top/en/2023/game-environment-feedback/Mon, 19 Jun 2023 00:00:00 +0000https://touchingfish.top/en/2023/game-environment-feedback/<p>I have written two ABMs (Agent-Based Models) before. On a grid, agents are paired at random, play one round of a game, then update their action. The only variable is &quot;what you look at&quot; — the payoff of this step, or the cumulative payoff across all historical games. I cannot derive the differential equations myself (the mean-field approximation was copied from the literature), but I can still follow the order of the ODEs: one is first-order, the other is second-order. Velocity versus acceleration, memoryless versus inertial. The micro-level setting is a hair's breadth apart.</p>https://touchingfish.top/en/2023/oscillating-tragedy-of-the-commons/Thu, 15 Jun 2023 00:00:00 +0000https://touchingfish.top/en/2023/oscillating-tragedy-of-the-commons/<p>The tragedy of the commons is an old story.</p> <p>In 1968, Garrett Hardin described a scene like this: an open pasture that anyone can graze, with every herder adding one more cow of their own. The benefit of that extra cow accrues entirely to the herder, while the cost of pasture degradation is shared by everyone. So every herder chooses to add one more, and the pasture is eventually destroyed.</p>