Hainish Cycle - Back Story

Back Story

Hundreds of thousands of years ago, the people of Hain colonized a large number of worlds, including Earth, known as Terra. Most of these were similar enough that humans from one world can pass as natives of another, but on some the Old Hainish 'Colonisers' used genetic engineering. At least one of the various species of Rokanan are the product of genetic engineering, as are the 'hilf' of Planet S (whose story has not so far been told), and the androgynes of Gethen in The Left Hand of Darkness. The Ekumen do not know whether the Colonisers sought to adapt humans to varied worlds, were conducting various experiments, or had other reasons.

Hainish civilization subsequently collapsed and the colony planets (including Earth) forgot that other human worlds existed. The Ekumen stories tell of the efforts to re-establish a civilization on a galactic scale through NAFAL (Nearly As Fast As Light) interstellar travel taking years to travel between stars, although only weeks or months from the viewpoint of the traveler, because of time dilation, and through instantaneous interstellar communication using the ansible.

This seems to have happened in two phases. First the League of All Worlds was formed, as an alliance of planets, mostly descended from colonization efforts from the planet Hain, uniting the "nine known worlds" - along with colonies, presumably. By the time of Rocannon's World it has grown but is also under threat from a distant enemy. It is destroyed by aliens called the Shing, who have the ability to lie in Mindspeech. After the apparent overthrow of the Shing by Terran descendants from Alterra/Werel, the alliance is eventually reconstructed as the Ekumen. In City of Illusions it is recalled as a league of some 80 worlds.

The second phase begins with The Left Hand of Darkness. The 80-plus planets seem to have reunited as the 'Ekumen' – a name derived from the Greek "oikoumene", meaning "the inhabited world", though characters occasionally refer to it as "the Household", which is in turn a reference to the Greek "oikos", a word which developed from the same root as oikoumene. Unexplained references are made to the 'Age of the Enemy.'