fastestpossible

Fastestpossible is a neologism used in discussions of theoretical performance limits. It denotes the conceptual upper bound on how quickly a process can occur or how much speed or speed-related performance can be achieved under a defined set of constraints, such as energy, space, medium, or information content. Because it is not a standardized technical term, its exact meaning varies by discipline.

In physics, the fastest possible transmission or travel is constrained by fundamental limits such as the speed of light in vacuum, c. Einstein's relativity forbids information or matter from exceeding c, establishing a universal ceiling for transit times between events separated in spacetime. In practice, objects approach, but never surpass, this limit when conditions allow.

In information theory and computation, bound results place upper limits on processing or communication speed given energy and physical resources. Bremermann's bound and related results tie the maximum rate of computation to system energy, while the Bekenstein bound and Landauer's principle relate information content and minimum energy per operation. These provide formal interpretations of fastestpossible under physical constraints.

In engineering and operations research, the term is often used to describe the fastest achievable completion time for a task given constraints such as time, resources, and workflow. Determining the fastest possible outcome requires explicit modeling of tasks, resources, and external constraints.

As an informal term, fastestpossible is best treated as a shorthand for the theoretical limit under specified conditions, rather than a single universal constant.