FYI, linguistically speaking

     Almost all of the dramatic or perplexing things happen now in my dreams and this is no exception:  I was in a lecture hall and the professor was asking questions from that superior stance that they often take, so everyone was pretty much intimidated, with answers not readily forthcoming.
   I had already answered one of his questions, the answer being "raison d'etre" though I cannot recall what it was in response to.  I was racking my brain over the second question.  He asked what "cyber" meant.  Nobody knew:  I thought I should know, but couldn't answer, and finding that answer  became a matter of sublime importance, which preyed on my mind throughout the night.  I think I was still dreaming but when I woke up this morning, the question was still on my mind, niggling away.
    It is now six o'clock in the morning and here's what I found out:
         Cyber is a prefix coined by a group of scientists in the early 1990's.  It is taken from the Greek word, kybernetes, meaning statesman or governor, and is defined as "the science or study of control or regulating mechanics in human and machine systems, including computers." 
         All we really need to know is that cyber means "of or relating to computers or the Internet."  However, the full explanation lies in the stuff of which dreams are made,  in my dreams anyway.