My theory of what we interpret a dream to be might be misunderstood. I believe that you are actually reading particles of light, which carry information, just like a computer carries 000011111 and basically reforms it back into the correct format so you can understand it. We absorbed light throughout our life and its broke down into all sorts of electrical pathways.
To understand light you have to look at what it is made of and how it works.
In physics, light is made up of photons. They are particles made up of electromagnetic radiation of all wavelengths. To go into too much detail can be confusing but they travel at the speed of light. Photons have both wave and particle properties. This basically determines the way it travels and what energy it stores to enable it to reach vast distances. Its energy can be transferred when it reacts with other particles, hence a particle exchange and interaction.
If a particle is going the speed of light, all the information it absorbs will have already happened. This is because if you travel the speed of light, what we define as TIME slows down. So if a photon traveling from the sun or a distance star bounces around other galaxies or races around our planet several times before it comes into contact with a human mind, then there could be a possibility that our brain can interpret an electric path of information from that sequence stored via a photon.
How does a photon or photon properties get into out electric stimulation via our brain?
Light passes through transparent matter but at a lower speed. The first thing you think of when reading this information is the eyes on the human body. Light is refracted through the eyes in order for us to make sense of images around us. The photon energy must interact or go somewhere else. Maybe we have developed a way of reading this information in the form of dreams.
We are best able to read these particles in a sequence when we are awakening or daydreaming.
If you read books on physics its all in there. But we are well off understanding it.
So if we can read this information, this would explain why humans come up with ideas and wake up with answers. The list goes on. If you look at human history, especially in comic formats, or future visions, artists impression etc. They have actually come true. Are humans seeing vivid images of there future life through light particles? Or for that matter maybe we are picking up vast amounts of information from other galaxies across the universe.