Dragon's like

I have juste read a book named 'a L'image du dragon' ( dragon's like) from serge brussolo ( a french author of science-fiction).......
His world is surprising, because he doesn't fall into the classic fantasy like: magic, elf, dwarf,.... He successfully creates a world where there are no 'bad people', and the main charater really has doubt.
This world is divided into two part: two seasons, two races, two custom,.....
One is the people of the water, carefree who petrify in the summer and live only under rain.
The other is the people of the desert, who can't support a single drop of water......
This perhaps seems too classic but it's well made and full of invention.

This world is great!, but why only a small history.... never finished? That's called a wast or i don't build worlds myself!