According to Alvin Toffler, author of Future Shock and The Third Wave, human history can be viewed in terms of waves. First there was the Agrarian Age, then came the Industrial Revolution, and now we are riding the crest of the third wave--the Information Age.
Rondeau, Roger E.
"A Sadistic Tic Tickler,"
Word Ways: Vol. 31
, Article 21.
Available at: http://digitalcommons.butler.edu/wordways/vol31/iss1/21