Dragon was one of the conference organizers, so starting with the first workshop on Saturday morning was above and beyond the call of duty.
Electric play is advanced play.
It's also important to locate good sources of information and good teachers, and to check their information. Dragon has been a paramedic. I checked his information with a Seattle electro-enthusiast who is a nurse and who attended the workshop, and with an electronics technician who attended the workshop. Dragon spent some time describing the function of the heart, which is regulated by an electrical impulse which can be interrupted by electric play. Some devices conduct electricity on the skin's surface.