The Warp cares not about the belief of a single mortal, it cares for the beliefs and actions of the many. For instance, the Eldar are all that remain of their civilization after the decadence of their people over millennia led to the birth of Slaanesh and their subsequent sacrifice. The trauma of this birth caused so much damage to reality that the great warp storm it spawned, the Eye of Terror, still rages to this day.
As for the book, I'll have to hunt it down when I have time to read again.
I haven't delved much into warhammer 40k, tell me more about that genocide.
I read a lot of 40k novels, and while it's been a few years, I'm unfamiliar with the genocide in question.
The Warp cares not about the belief of a single mortal, it cares for the beliefs and actions of the many. For instance, the Eldar are all that remain of their civilization after the decadence of their people over millennia led to the birth of Slaanesh and their subsequent sacrifice. The trauma of this birth caused so much damage to reality that the great warp storm it spawned, the Eye of Terror, still rages to this day.
As for the book, I'll have to hunt it down when I have time to read again.