Unprecedented economic growth (in the USA) from 1870 to 1970, due to 2nd industrial revolution

  • elictricty, light, evelators, machines
  • internal combustion engine, vehicles, air transport,
  • telephone, phonograph, movies, radio, TV
  • Running water, sewer pipers, conquest of infant mortality
  • chemicals, plastics, antibiotics, modern medicine
  • utter change in working conditions, job & home

3rd industrial revolution since 1960s: only evolution

  • entertainment: TV from color to time-shifting and streaming
  • information: from mainframes to PCs, web and e-commerce
  • from land lines to mobile phones
  • productivity enhancers, atm, bar code scanning