So, one thing the 40K fluff seems to drift back and forth on...
How much does the average citizen of the Imperium know about the Heresy, the Traitor Legions, Chaos, Demons, and the like? Sometimes it's made out to be a dark secret the Lords of Terra hide at all costs. Other times it seems most people have a vague awareness of it. Other times it almost seems to be common knowledge.
Supposedly Logan Grimnar was angry that whole armies were "relocated" after the first war for Armageddon (against Angron and the Worldeaters). But then how does the Imperium explain Cadia? Do the Cadians know what they're all standing at arms to defend against? Are they kept fiercely isolated so no one else ever knows?
Does the kid flipping grox-burgers know who the Black Legion was? Has he ever heard of Horus? Does he know what happened to the Warmaster...?
Just curious what everyone's thoughts/ opinions are.