‘Media’, which transmit information from one person to another, keep on evolving every day and make one’s life convenient. According to my research on such a media, its life period, viz. decodable period is getting shorter and shorter as the times go by. We are now able to process and save a large amount of information by arranging information using 0 and 1.However, I wonder if this information of our period can leave foot prints after thousand years like ancient Mesopotamia and ancient Egypt. As you can infer from this graph, graffiti carved on the desk might be discovered with high rate by coming generations (may not be human beings!).