Suite à l'article de Ranker, faisant état de cinq livres plutôt difficile à lire mais qu'il faut lire néanmoins, SF Signal a posé la même question à plusieurs auteurs de science-fiction et de fantasy. 
Voici le début de la réponse de Jeff VanderMeer : 

Citation:

"Challenging" usually is code for "yeah, I'm calling you 'challenging' rather than 'visionary' or 'brilliant' because I really don't want my mind cross-pollinated with crazy-ass stuff that will change my life forever--just give me some escapist cotton candy." So here goes...your brain will be transformed. "The Beak Doctor" by Eric Basso, a novella that's Gothic by way of James Joyce and Proust, rewards more than one read. In fact, you'll have to read it more than once to get the sense of it and its ruminations on a strange disease. It's one of those let-it-wash-over-you and come back later for the logic of it. Any of Reza Negarestani's half-philosophy/essay, half-fiction tales, featured in part in the Starry Wisdom anthology, should be required reading.

 Pour lire l'ensemble des réponses, c'est sur le site de SF Signal.