My hunch, for what it's worth, is that most of us probably find it much, much harder than we realize to really imagine what catastrophe is like. I have a hunch that we all labor under this rather convenient illusion that if we read about the Syrian refugee crisis, we can imagine what it feels like to set off from your home and your life with all your possessions in two bin liners. We all think that we can imagine that and my guess is that none of us have got a clue.