Have you ever been put on hold? Sometimes it is necessary in life for this to happen, even as a train has to pull into a sidetrack. There is no seeable reason for the train to do this, but if it doesn't, there will be some real destruction. There is another train coming toward it at full speed. And as the first train sets safely on the side track the oncoming train speeds by without damage to anyone.Our human ability many times cannot understand,...