Asimov later explained that the in-universe reason for this perception was that it was formulated by Earthmen many centuries after the event, and which had become distorted, due to the loss of much of their planetary history.
[citation needed] This work is generally regarded as part of the Empire series, but does not directly mention either Trantor or the other Spacer worlds.
Commentators noted that Nemesis contains barely disguised references to the Spacers and their calendar system, the Galactic Empire, and even to Hari Seldon which seem to have been deliberately placed for the purpose of later integration into the Foundation universe.
For example, the 1983 Ballantine Books printing of The Robots of Dawn lists the Empire novels as: The Stars, Like Dust, The Currents of Space, and Pebble in the Sky.
Given that The Currents of Space includes Trantor and that The Stars, Like Dust does not, these two books possibly were accidentally reversed in Asimov's list.
"[4] The following works are listed in chronological order by narrative: [5] Asimov's novels covered only 500 of the expected 1,000 years it would take for the Foundation to become a galactic empire.
Allen's novels echo the uncertainties that Asimov's later books express about the Three Laws of Robotics, and in particular the way a thoroughly roboticized culture can degrade human initiative.
He eventually agreed, and with Vicinanza and after speaking "to several authors about [the] project", formed a plan for a trilogy with "two hard SF writers broadly influenced by Asimov and of unchallenged technical ability: Greg Bear and David Brin.
[10] The following works are listed in chronological order by narrative: In Foundation (1951), famed mathematician and psychologist Hari Seldon has developed the science of psychohistory, which uses sophisticated mathematics and statistical analysis to predict future trends on a galactic scale.
He has predicted the unavoidable and relatively imminent fall of the Galactic Empire, and intends to establish the Foundation, "a repository of crucial, civilization-preserving knowledge" that will enable society to revive itself more quickly and efficiently.
[21][22] The Prime Radiant, a device designed by Seldon, stores psychohistorical equations showing the future development of humanity.
The Prime Radiant projects the equations onto walls in some unexplained manner, but it does not cast shadows, thus allowing workers easy interaction.
As a tool of the Second Foundation, control operates through the power of the mind, allowing the user to zoom in to details of the equations, and to change them.
The object, which hovers above the ground, is surrounded by a "null field" that disorients humans, preventing anyone from approaching until the Vault itself allows them to.
[21][22] The Star Bridge is a massive structure on Trantor that serves as a space elevator connecting the surface of the planet to a starship platform in geosynchronous orbit.
When the Star Bridge is severed by a terrorist attack in "The Emperor's Peace", the bulk of it crashes to the surface and kills 100 million citizens.
[31] Trader and con man Hober Mallow possesses a castling device which allows two people of similar mass to switch places via a form of teleportation.