Over the ages, every technological advance has been accompanied by added danger and more destructive forms of injury. For example, in the early days of transportation, the greatest peril involved stubbing a toe, tripping, or falling into a ditch. With progress, mankind risked being kicked by a horse or having a foot squashed under a wagon wheel. We now contend with pileups on freeways, train wrecks, and plane crashes which are all able to wreak havoc to life and limb never possible in bygone days.

There seemed to be no particular hazards associated with knowledge transmission by oral tradition. But with the advent of books came near vision and its resultant myopia, which has been advanced to even further degrees thanks to televised media.