Bear, and Stephen R. Donaldson's The Real Story for future technology and science; and Dune by Herbert and Bear's Anvil of Stars for negative interactions between humans. Alpha Centauri set out to capture the whole sweep of humanity's future, including technology, futuristic warfare, social and economic development, the future of the human condition, spirituality, and philosophy. Reynolds also said that "getting philosophy into the game" was one of the attractions of the game. Believing good science fiction thrives on constraint, the developers began with near-future technologies. As they proceeded into the future, they tried to present a coherent, logical, and detailed picture of future developments in physics, biology, information technology, economics, society, government, and philosophy. Alien ecologies and mysterious intelligences were incorporated into Alpha Centauri as external "natural forces" intended to serve as flywheels for the backstory and a catalyst for many player intelligences. Chris Pine, creator of the in-game map of Planet, strove to make Planet look like a real planet, which resulted in evidence of tectonic action. Another concern was that Planet matched the story, which resulted in the fungus being connected across continents, as it is supposed to be a gigantic neural network. Terraforming is a natural outgrowth of colonizing an alien world. The first playable prototype was just a map generator that tested climate changes during the game. This required the designers to create a world builder program and climatic model far more powerful than anything they'd done before. Temperature, wind, and rainfall patterns were modeled in ways that allow players to make changes: for example, creating a ridge-line and then watching the effects. In addition to raising terrain, the player can also divert rivers, dig huge boreholes into the planet's mantle, and melt ice caps. In addition to scientific advances, the designers speculated on the future development of human society. The designers allow the player to decide on a whole series of value choices and choose a "ruthless", "moderate", or "idealistic" stance. Reynolds said the designers don't promote a single "right" answer, instead giving each value choice positive and negative consequences. This design was intended to force the player to "think" and make the game "addictive". He also commented that Alpha Centauris fictional nature allowed them to draw their characters "a lot more sharply and distinctly than the natural blurring and greyness of history". Chiron, the name of the planet, is the name of the