"The Void-Which-Binds" is a term invented by writer Dan Simmons in his Hyperion novels. It is a descriptor, a poetic rendering of the scientific concept of the smallest possible dimension of space, and the smallest possible dimension of time - Planck space and Planck time. In Simmons's novels, the Void-Which-Binds acts as sort of a quantum medium through which both matter and energy can be transmitted. It is in the Void-Which-Binds that the AIs live; it is through the Void-Which-Binds that the farcaster portals and fatline communication networks operate. A beautiful term for a strange scientific idea.