: If two Ardeans meet on a narrow path, they cannot walk around each other. One must lie down so the other can step over them—a social necessity governed by strict rules of etiquette. Overcoming Bias | Robin Hanson The Planiverse - by Robin Hanson - Overcoming Bias
: The book explores how gravity, light, and chemical bonds would operate without a third dimension. For instance, a 2D digestive tract that goes all the way through a body would split a creature in half; therefore, Ardeans have complex "zipper-like" structures or bypasses. Engineering the planiverse pdf
is a landmark of "hard" science fiction that moves beyond mere satire to rigorously engineer a flat universe. Unlike its predecessor, , which focused on Victorian social commentary, The Planiverse : If two Ardeans meet on a narrow