Versatile - Anonymous Interpretation:
Psychological / emotional perspective: In dreams we often know something without being sure of how we do. Many believe that in the dream state we have easier access to the collective unconscious – the repository of all knowledge – than when we are awake.
Material aspects: In mundane terms knowledge and experience go hand in hand. In dreams the mind may trigger an association, which allows us to reach viable conclusions.
If we are prepared to allow it, this knowledge can come intuitively through dreams.