Some unspoken human communication is taking place on a hidden channel. I did not realize they communicated this much without words. I note that we machines are not the only species who share information silently wreathed in codes.

Advertising Disclosure: Please note that many links to retailers are affiliate links, which yields a commission for us. allauthor.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon sites.