Some people prefer to leave the past alone for different reasons. Some prefer to concentrate on problems and issues of the present and those that we shall face in the future; and such people don’t see how the past is relevant to current issues. But some prefer to ignore the past because they prefer to cover up the past insofar as events of the past do not present humans and human society in a good light. But generally those who prefer to ignore past history are those for who do not apply the lessons of history; and history surely has lessons to teach us.