Historical Analogues in RPG Design

Fellow RPG writer Lou Agresta updates recently about realism in D&D writing:

"For anyone reading their first one, these noodles are just a little stream of consciousness musing on a topic. This time around its the way specific RPGs (and most other fiction) ground themselves in specific historical time periods or cleave to historical elements to achieve verisimilitude. My wonderings include things like how necessary is it? When to draw the line between historicity and fantasy?"

Link: Lou’s Noodle #2: Historical Analogues in RPG Design