By noted RPG author S. John Ross.
“Most realms of fantasy, no matter how baroque or magical, can not get by without a supply of ordinary farmers, merchants, quarreling princes and palace guards. Clustered into villages and crowding the cities, they provide the human backdrop for adventure.
“Of course, doing the research necessary to find out how common a large city should be, or how many shoemakers can be found in a town, can take up time not all GMs have available. To the end of more satisfying world design, I've prepared this article.”