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Subspace Ansible: Difference between revisions
→Aversions With FTL Travel
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** Deliberately invoked in The Fifth Frontier War, a tabletop board game based on the Traveller universe. Players were required to plot moves multiple turns in advance. The presence of Admirals, intelligence gathering, or other factors could reduce the preplanning by one or two turns.
*** Note that this is almost exactly the same problem faced in H. Beam Piper's universe.
* ''[[Stars Without Number]]'' has it mostly averted. FTL lasers are one of the few metadimensional technologies available on [[Tech Level|TL 4]] (i.e. worlds capable of interstellar travel), widely used for communication, which is not only fast, but more reliable and secure, thanks to not interacting with almost anything in visible universe. The problem is that it requires rather precise targeting, thus all uses are variations of either "call one of the objects you are actually tracking now" (e.g. other ships of a fleet) or "call something ''on a known orbit in the same star system as you'' <nowiki>[and give it your own coordinates to let it reply]</nowiki>" (surface to orbit, one planet or asteroid habitat to another). With moving objects you don't track, you could communicate via stationary network. But at interstellar ranges, only by ships.
=== [[Video Games]] ===
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=== [[Web Comics]] ===
* In ''[[Freefall]]'', it's specifically said that the only way to communicate between star systems is by sending messages via ship. As most interstellar travel is via sublight vessels ([[FTL Travel]] being quite expensive, and possibly dangerous going by the drive's name: Dangerous And Very Expensive {{[[[Fun with Acronyms]] or DAVE}}] drive), this means that a message and its response could take up to many months, as the ship carrying it travels on its normal route.
== Aversions Without [[FTL Travel]] ==
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