The Magic Circle

Game rules, therefore, create a kind of artificial reality in which those rules exclude other equally valid or defensible rules. In other words, there is no place for a chess piece in backgammon, baseball isn’t played with a hockey puck, a player can’t die in Candy Land, and there are no sugarplum fairies (to date) in World of Warcraft. The way each game’s rules and equipment combine to define the unique experience of playing that particular game is referred to by theorists as the magic...

 Measuring Cultural Information

But there may be more significant ways to characterize civilizations than by the energy they use for communications purposes. An important criterion of a civilization is the total amount of information that it stores. This information can be described in terms of bits, the number of yes-no statements concerning itself and the universe that such a civilization knows. An example of this concept is the popular game of "Twenty Questions," as played on Earth. One player imagines an object or conc...