Parallels Between The Psychotechnic And Technic Future Histories

(i) In both histories, Earth is unified in order to end the destruction caused by warring nation-states. In the Psychotechnic History, a U.N. world government is established in 1965 and the Solar Union is founded in 2105 whereas, in the Technic History, the Solar Commonwealth is established in the twenty-second century.

(ii) In the Psychotechnic History, hyperdrive is invented in 2784 whereas, in the Technic History, it is discovered in the twenty-second century although these are different kinds of hyperdrive.

(iii) In the Psychotechnic History, the Second Dark Ages begin in 2300 and the Third in 3200 whereas, in the Technic History, the Time of Troubles is in the twenty-seventh century and the Long Night is in the mid-fourth millennium.

(iv) In the Psychotechnic History, the Second Dark Ages and the invention of hyperdrive separate the Solar Union from the Stellar Union, the latter founded in 2900, whereas, in the Technic History, the Troubles separate the Solar Commonwealth from the Terran Empire, the latter proclaimed about 2700.

(v) In the Psychotechnic History, the Third Dark Ages are followed by human evacuation of the galactic periphery and migration to the galactic center whereas, in the Technic History, the Long Night is followed by the dispersal of human civilizations through several spiral arms.

(vi) Both histories have a chronology compiled by Sandra Miesel.