Extensa is a novel

Novel

A novel is a book of long narrative in literary prose. The genre has historical roots both in the fields of the medieval and early modern romance and in the tradition of the novella. The latter supplied the present generic term in the late 18th century....

 written in 2002 by Jacek Dukaj

Jacek Dukaj

Jacek Dukaj is a Polish science fiction writer. Winner of the Janusz A. Zajdel Award , Śląkfa , Żuławski Award , Kościelski Award and the European Union Prize for Literature .-Career:Dukaj studied philosophy at the Jagiellonian University...

, Polish science fiction

Science fiction and fantasy in Poland

Science fiction and fantasy in Poland dates to the late 18th century. During the later years of the People's Republic of Poland, social science fiction was a very popular genre of science fiction. Afterwards, many others gained prominence. Currently there are many science fiction writers in Poland....

 writer and published in Poland by Wydawnictwo Literackie

Wydawnictwo Literackie

Wydawnictwo Literackie is a Kraków-based Polish publishing house. Since its foundation in 1953, Wydawnictwo Literackie has been focused on publishing modern prose and poetry by both renown and emerging authors, both Polish and foreign...

. The novel fits in the hard science fiction

Hard science fiction

Hard science fiction is a category of science fiction characterized by an emphasis on scientific or technical detail, or on scientific accuracy, or on both. The term was first used in print in 1957 by P. Schuyler Miller in a review of John W. Campbell, Jr.'s Islands of Space in Astounding Science...

 genre, describing a post-singularity

Technological singularity

Technological singularity refers to the hypothetical future emergence of greater-than-human intelligence through technological means. Since the capabilities of such an intelligence would be difficult for an unaided human mind to comprehend, the occurrence of a technological singularity is seen as...

 society, where some humans have evolved further while others chose to remain behind.

As usual with Dukaj's works, it deals with highly advanced technology (like EPR paradox

EPR paradox

The EPR paradox is a topic in quantum physics and the philosophy of science concerning the measurement and description of microscopic systems by the methods of quantum physics...

, related to the Einstein-Rosen-Podolsky bridge) and its implications for human society.

It is the second of Dukaj's four stand alone novels, and the only one that has not won the Janusz A. Zajdel Award

Janusz A. Zajdel Award

The Janusz A. Zajdel Award , often called just Zajdel,is the annual award given by the Polish science fiction and fantasy fandom for the best stories published in the previous year...

(it was nominated for it in 2002).