Projectionists fading to black?

From MLive.com: Film exhibition technology changed a good deal in the last century: dangerous carbon arc lamps (which sparked a live flame inside projectors) were replaced by far safer xenon bulbs; sound was first introduced and then, eventually, went digital; film stock made from highly flammable nitrate was supplanted by “safe” film, made from polyester; computers came to control the curtains, pre-movie music, and the lights via a timer; and large, horizontally stacked “platter” systems came along, able to feed an entire film, spliced together onto one giant reel, into a projector – thus rendering the old, switch-back-and-forth-between-projectors system obsolete.