That's fascinating. I love reading about these little random discoveries that change the collective thinking on a historical topic, like when Norse artifacts were discovered on North America's east coast and we learned that the Norse had beaten Columbus to the punch by 400 years.

Medieval crackheads.

Chewing coca leaves seems to have a long history that continues to this day. I hear it's common practice among long distance drivers of the present and it wouldn't be surprising to find out that this has been the case ever since people made long transits on foot or horseback. Not sure we can call it cocaine though, isn't that term reserved for the hydrochloride salt form of the drug?