Seldon Plan - Plan Consistency

Plan Consistency

Finding a complete canonical reference for the Plan is difficult. Asimov admitted that he wrote the last two novels due to reader demand, and not from a predetermined plan or vision. Thus, he may have made significant changes to his original vision, as set forth in the Foundation trilogy. He also made efforts in Foundation's Edge and Foundation and Earth to tie the books into his Robot and Empire series. This can, at least somewhat, account for some of the discrepancies that the reader finds in the literary development of the plan. Eventually, the Seldon plan was abandoned in favor of the giant super organism Galaxia, also known as Gaia. However, later works by other authors suggest that the great second empire could be a powerful combination of the two possibilities.

In the end of Foundation and Earth, the main character, Golan Trevize, explains that psychohistory had a flaw, that it didn't apply for humaniform robots like R. Daneel Olivaw, Gaians like Bliss and the Mule and more like them. Also, Trevize says that, the only smart life beings are humans, and if other life beings attacked them, humans wouldn't be united to defeat them. If it was Galaxia, every planet would be united. With this message, all of Asimov's books have a chronological ending, and it seems that humans have universal peace now.