Collective trauma research tells us if you haven't been through the event, you'll never quite understand. That doesn't mean people outside Melbourne haven't had their own experience, or can't help.
Most of us are familiar with the concept of psychological trauma. But what is collective trauma, and how can we tackle it in the wake of the bushfire crisis?
Even indirect exposure to the terrorist attacks of September 11 has left profound and deep impact on those too young to remember a world before that.