Big bucks go galloping

Ordinary people like us can't get our heads around big numbers. They're like quantum theory, string theory or mauling theory in rugby - challenging. When trillions of dollars were wiped out as world markets took a tumble this week, most of us glazed over. The immensity was too much. Who's ever counted to a trillion? What is a trillion?I googled and discovered a trillion is a thousand billion.