
As much as the Apple TV+ series Foundation is an adaptation of the famous Isaac Asimov book trilogy of the same name, much of the mythology of the series pulls from material outside of the main trilogy, including Asimov’s robot novels, as well as some of the Foundation prequel books. In the fourth episode of Season 3, “The Stress of Her Regard,” Foundation dives into a part of the planet Trantor that connects both to robots and one of Asimov’s biggest retcons.
Basically, this season has reintroduced the concept of the Mycogen sector into the canon of the TV version of Foundation. And, this location doesn’t really originate in the 1950s novel trilogy, but instead comes from the 1988 prequel, Prelude to Foundation. Here’s how the newest Foundation episode reboots and redefines the Mycogen sector, and what it might mean for the series going forward.