The human mind has a defence mechanism which compartmentalises the memory of extreme trauma. This is the reason why people cannot remember serious road accidents. Their mind creates a barrier around the event by way of amnesia so they don't have to keep reliving the horrible memories. From ancient times this faculty has been understood by the Elite Brotherhoods. In Nazi Germany during the world wars, interns within the concentration camps were subjected to trauma based mind control. It was here that the methods of exploiting this phenomena for mind control were perfected.
The Nazis realised that if someone was systematically traumatised through torture, sexual abuse, and by sacrificing and torturing others as an intern was forced to watch, a person's mind could be shattered into a honeycomb of self contained compartments or amnesiac barriers. Satanic rituals are widely used to attain these.
Once the mind's unity has been shattered, these various compartments, each unaware of the other's existence, can be programmed for various tasks or experiences. Using trigger words and hypnotic keys, sounds or signals, these compartments can be pulled forward and pushed back like a mental filing cabinet.
One self contained compartment or fragment of mind becomes the person's conscious level and it is then returned to the subconscious and another compartment assessed. This means that once a victim has performed a task they will forget what they have done. This condition has become known as Multiple Personality Disorder (MPD) or Dissociative Identity Disorder (DID). The latter is more accurate because the compartments are not personalities as such; they are fragments of the mind which have dissociated and become detached from the rest of the consciousness.
Most people are MPD, or multiples, to a certain extent because we all shut out what we would not rather face. However with Trauma Based Mind Control we are talking about an extreme and calculated version of it.
Although trauma can be forgotten, subconsciously it is still affecting an individual and its life physically, mentally and emotionally. Many people who have been sexually abused and systematically traumatised as children appear mentally and physically unstable especially if the programming has stopped and the compartment walls begin to dismantle.
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SOURCE: The Biggest Secret by David Icke p317 & 318