DeadSides are simply extra sides that were used to fill out a program which had an odd number of sides. Since
LaserDiscs are two bonded discs, a program needing 1, 3 or 5 sides would have to be married to something to make
a complete disc. After 1982, programs that required a blank side received a special program on the back side that
has become known as the "flipped turtle". While Pioneer was the only manufacturer to use the "flipped turtle" image,
all LaserDisc manufacturers came up with a blank program for these odd sided titles.
However, in the days of DiscoVision, they found a use for all the defective and/or over=pressed sides that they were
producing. By applying a coating to the disc, it would prevent a player from attaining focus on the disc. This worked
well until some studious collectors found that a little elbow grease and rubbing alcohol would remove the coating and
reveal the 'hidden treasure' below.
Thanks for taking the time and your interest in DiscoVision.