Evolutionary Game Theory, Natural Selection, An... File
Classical game theory, pioneered by John von Neumann, assumes players are rational actors trying to maximize profit. However, nature isn't rational; it’s functional. In 1973, John Maynard Smith and George Price realized that in biology, "strategies" aren't conscious choices, but heritable traits. Instead of "utility" or "money," the payoff is : the ability to survive and reproduce.
"I scratch your back, you scratch mine." If individuals interact repeatedly (the Iterated Prisoner’s Dilemma), strategies like Tit-for-Tat (starting with cooperation and then mimicking the opponent's last move) become an ESS. Beyond Biology: Human Society Evolutionary Game Theory, Natural Selection, an...
In this framework, natural selection acts as the "referee." Strategies that yield higher payoffs (more offspring) spread through the population, while less effective strategies fade away. The Evolutionary Stable Strategy (ESS) Classical game theory, pioneered by John von Neumann,
One of the greatest triumphs of EGT is explaining . Under strict Darwinian evolution, an animal that sacrifices itself for another should go extinct. However, EGT shows that "cooperation" can be a winning strategy under certain conditions: Instead of "utility" or "money," the payoff is
Evolutionary Game Theory (EGT) represents one of the most profound shifts in how we understand the natural world. By merging the strategic logic of classical game theory with the ruthless mechanics of natural selection, EGT explains why animals—and humans—behave the way they do, even when those behaviors seem counterintuitive. The Foundation: From Rationality to Fitness
If a population is all Doves, a single Hawk mutant will feast and multiply rapidly. If a population is all Hawks, they constantly injure each other, making a "peaceful" Dove mutant more successful by comparison. The "stable" result isn't a world of only Hawks or only Doves, but a balance (an ESS) where both coexist, or where individuals vary their behavior. This explains why we see a mix of aggression and cooperation in the wild. Solving the Paradox of Altruism