If the entire span of human evolution is compressed into the pages of one book, most of the bookmarks and chapter changes would be found around the evolution of communication. From the exchange of ideas to establishing relations, communication is perhaps the conceptual equivalent of the wheel. But unlike the wheel, not all communication has always been meant for everyone out there. Privacy and secrecy have been interlaced into human communication for almost as long as we can think of. Don’t you think even the stone age man carefully guarded the designs of his latest tools and only shared them once he was completely sure it wouldn’t go into the wrong hands? We might not have any concrete evidence of the same, but it is quite natural that he adopted some form of modified communication, as in, encryption, to achieve this secrecy. For confirmation, we may have to wait till we find the first stone age love letter.
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