While not relating to Burna, we have just published an article discussing literacy and illiteracy in the Southern Levant during the Bronze Age. In the article we focus mostly on reasons why literacy appears in certain periods, but more importantly, why it doesn’t appear when you would expect it to .
The full quote is:
Shai, I. and J. Uziel. “The Whys and Why Nots of Writing: Literacy and Illiteracy in the Southern Levant During the Bronze Ages.” Kaskal 7 (2010): 67–84.