How to make the memory more efficient?

There are pills from forgetfulness? Whether it is necessary, to adhere to a special diet, to improve memory work? The person remembers nothing from the studied material, because at it bad memory? Whether training in a dream is possible? What it is possible to make for more a learning efficiency? Whether it is possible «again survive» past events thanks to hypnosis? Whether it is possible to trust indications of witnesses?

In this chapter we will try to answer these questions.