When we record any video, where do we keep and store it? In a space- that we call memory card or disk or any other kind of storage device. When we are required to see our memories, what we do? We play it with video player software which is known as media player, dvd player or video player etc. These video player software works as the gate way to visualize the past in-front of us. Same way our reality is storing in another place/space which is another dimension that we know as our past. We can always see it by creating a gate way same as video player software or we may say it as knowledge.