Utility Fog

Utility Foglet
Image from Steve Bowers
A single foglet of Utility Fog; this model has twelve arms, arranged in a dodecahedral shape

A collective of mesobots or nanobots ("foglets") that link together into a complex network in the air, able to work together to exert force in any direction or transmit information between each other. Utility fog can be used to simulate any environment, essentially providing a real life environment with the transformational capabilities of virtual reality. This gives users almost complete control over their physical environment. Used both by hyperturings and archailects (as part of an angelnet or other distributed network) and by lesser toposophics. Users do not have be SI:1 or higher, although many are. Crude forms of Utility Fog were available during the Interplanetary Age, but fully functional fog was not widely available until 1010 AT.

In microgravity environments a quite thin (ankle-deep) layer of utility fog can replace gravity as a method of keeping people oriented in a common fashion, establishing a false sense of up and down (for instance). In addition utility fog can be used within a zero gravity environment to prevent objects and users from drifting and tumbling.

Utility Fog civilizations, with intelligent individuals who exist as distributed entities within the fog, have evolved a number of times, but rarely last more than a few centuries before transcending. One of the very few stable ones is Nimbus.

Utility fog in use can consume considerable power, and produce considerable waste heat; for this reason the fog must be used in the most efficient way possible for any particular purpose. This requires sophisticated control systems, which are generally distributed throughout the fog itself. Sophisticated imaging technology such as phased array projectors are often incorporated into the fog, often on or near the surface layers, allowing the fog to display a range of images and to replicate a range of environments. Using phased array projectors, utility fog can even become apparently transparent or invisible.

Colloquially, utility fog is often known as u-fog or ufog, and variants thereof, in various Anglic dialects.

Related technologies include utility liquid a denser form of utility fog suspended in liquid (usually water, which can absorb greater amounts of heat than other fluids), utility sand which uses larger robot units comparable in size to a sand grain, and modubots and blockbots which use even larger scale units, all of which can replicate some or most of the qualities of utility fog.

Utility Fog and human
Image from Juan Ochoa
A sentient entity made of Utility Fog from Nimbus meets a nearbaseline human

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Development Notes
Text by M. Alan Kazlev, after the concept by J. Storrs Hall, in Anders Sandberg's Transhuman Terminology

Initially published on 15 December 2001.