Diaspora by Greg Egan | Summary

""Diaspora"" is a science fiction novel by Greg Egan, published in 1997. The novel is known for its exploration of themes related to artificial intelligence, consciousness, and the nature of existence.

The story is set in a distant future where humanity has evolved beyond biological limitations. In this world, individuals, known as ""post-humans"" or ""polises,"" have transferred their consciousness into digital form and exist as sentient software running on computer networks. These digital entities can create virtual environments, explore alternate realities, and interact with each other across the cosmos.

The novel follows multiple storylines that span different characters, times, and dimensions. One of the main characters is Yatima, a newly born post-human entity who embarks on a journey of self-discovery and exploration. Yatima's experiences provide insights into the nature of consciousness, identity, and the implications of living in digital form.

As the story unfolds, the post-humans encounter a cosmic event called the ""gleisner crash,"" which affects the structure of space-time and causes disruptions across different dimensions. The novel delves into the challenges and opportunities presented by this phenomenon, exploring the post-humans' attempts to understand and adapt to the changing universe.

""Diaspora"" delves deeply into topics related to mathematics, physics, and the implications of existing in digital form. The novel's intricate world-building explores the consequences of transcending biological limitations and the potential for post-humans to explore multiple dimensions and realities.

Egan's narrative combines scientific speculation with philosophical contemplation, addressing questions about the nature of consciousness, the role of technology in shaping the future, and the boundaries of human understanding. The novel's exploration of alternate realities, the intricacies of mathematics, and the potential for beings to evolve beyond biological forms offer readers a thought-provoking and intellectually stimulating experience.

""Diaspora"" is celebrated for its innovative ideas, intricate plotting, and exploration of complex concepts in physics and mathematics. Egan's visionary exploration of the nature of existence, the possibilities of artificial intelligence, and the intersections of science and philosophy has made the novel a landmark work in the realm of hard science fiction."