Much is too be garnered from columnist Lee Duigon's investigative report of the event's surrounding the Freshwater inquisition.  

 "We will probably not know, until the court case is tried, how one student in the class came to be injured. The investigators' report says that Freshwater first made "an X on his own arm," and then several students asked to try it, too. Later, an investigator tried to duplicate the one child's injury by applying the device to his own arm, but was unable to do so: "[T]he device left a slight redness with no burns, and the redness disappeared overnight." That's a far cry from a painful injury that lasted for several weeks."  A must read