I’ve been reading scifi lately. I know when I pick up a book of this genre there will be concepts, ideas that will stretch, challenge my understanding of how things can be. A gnomon, the reading informs me, is the part of a sundial that stands perpendicular to the horizontal plane on which the hours of the day are inscribed. In the book Gnomon becomes a metaphor (a being as well) for a conception of reality at odds, right angles, I guess, to what we understand to be so, dealing as it does with extranoematic ideas: concepts that lie outside the confines of human thought.
The story is of a futuristic, Matrix-like surreality of a controlling artificial intelligence that is growing increasingly oppressive, protected as it is by a firewall, ‘Firespine’, but opposed by a few freedom-lovers who would like to see it gone and Apocatastasis to occur, that is the restoration of creation to a condition of perfection. In order to do so avoidance of the planet-sized multiple consciousness, Zagreus (Greek mythology reference here) who absorbs beings that fall within its realm (sort of like the Borg on Star Trek) is necessary.
In the end the author informs us that we all we become Gnomon. I think I’m going to set aside scifi for a while.