Some people always stay behind. You see the same patterns when you read about accounts of the Holocaust, Cambodian genocide, Rwandan genocide; unfathomable numb

Some people always stay behind. You see the same patterns when you read about accounts of the Holocaust, Cambodian genocide, Rwandan genocide; unfathomable numbers of people stay put. Sometimes people have a good excuse, e.g. elderly or sickly. But often it's inexplicable. Maybe its personality traits that resist change (moving is more stressful for some than others, especially when unplanned), or resist accepting what others can clearly see as an inevitability. This pattern is so pervasive that any intelligent observer should question whether they would get up and leave under the same circumstances; clearly there are dynamics at play that aren't evident from the outside.