I'm not talking about fools that make the decision to ignore the warnings (57 people at Mt. St. Helens elected to die), but the ones who never had a clue.  
All the governments in the world are literate.  I doubt that many of them really have to depend on oral history to survive.  But their people should?  
Some say ignorance is bliss.  Hey, look at America!  So many people here are functionally illiterate that many of them probably wouldn't recognize the signs of a tsunami, either.  "Hey, George, don't that look like a gold watch out there?"
Sue