Without hurting anybody, we all tend to laugh at others' discomfort. When someone slips on a banana skin and falls it's funny.
People are so busy dreaming the American Dream, fantasizing about what they could be or have a right to be, that they're all asleep at the switch. Consequently we are living in the Age of Human Error.
Another cause of change, one less noticeable but fundamental, is the modern growth of population closely connected with scientific and medical discoveries. It is interesting that the United Nations has set up a special Commission to study this question.

