The human brain takes in about 10 million bits of information every second.
Out of this our conscious mind can process only about 40 to 50 bits.
The rest does not vanish into thin air.
It is stored in the subconscious.
Your subconscious is a databank and holds all the memories since you separated as a fractal from the Creator including the hundreds of human lives that you may have lived!
Some researchers wanted to see what the subconscious mind picks up, so they took a few people out for a walk into a busy part of the city. After coming back, under hypnosis, many of these people were able to recall details like license plate numbers, store signs, sometimes even conversations that they overheard while walking.