Those who ignore history are doomed to repeat it.
Those who write history can change it.
Yeah, yeah: The commonly used expression, “Those who ignore history are bound (or doomed) to repeat it” is actually a mis-quotation of the original text written by George Santayana, who, in his Reason in Common Sense, The Life of Reason, Vol.1, wrote “Those who cannot remember the past are condemned to repeat it.”
But to change history at a particular point in time (or, more properly, write an alternative fiction novel set during that period) one must understand the events that took place at that time. One must also understand the technology of that time.
For these reasons, I am presenting non-fictional information one would need to write a fictional story.
My latest post is on the necessity of Kings in Medieval society. Lacking any other social structure, they were needed to dampen violence.
Check out Kings here: http://www.waltsocha.com/kings-and-medieval-social-structure