The media that carries today’s information is more perishable than the paper and stone that carried the message of previous generations of humans. If the human civilization were to perish what record would be left it was even here? If we want to send a message to our great grandchildren’s grandchildren or even aliens or just other humans in the distant future how may we do that if the technology to read the media no longer exists, or worse, the language no longer exists. We need to develop methods of transmitting information so that any entity anywhere in any time could understand its significance.
Searching around I found this pretty interesting: