What Is the Difference Between “Reality Series” and “Documentary Series”?

The question of distinction between “reality” TV series and “documentary” TV series (or “docu-series”) has been asked for many years. At least since early 2008, when a member of the DBSTalk forum perfectly summed it up as: “Survivor makes you want to get another beer. Planet Earth makes you want to recycle the can.” The former being the reality program …