Rules as long before: Add words and punctuation to the phrase at either end such that the the result will be a good English sentence. No adding things within the phrase.
mythos so mainstream it has passed, whatever
mythos so mainstream it has passed, whatever

Comments
Edited at 2016-09-03 06:47 pm (UTC)
[Julian Ralph (1892. On Canada's Frontier: Sketches of History, Sport, and Adventure and of the Indians, Missionaries, Fur-Traders, and Newer Settlers of Western Canada]
Anne