Our underlying motives... and how they can affect our actions.
When we get hurt by something, when there is an injustice, we can set up rules or hoops for people to jump through so that it doesn't happen again. Often we don't even know we are doing it.
It can be the same when we go through an unexpected situation such as the storm that we have just endured in Adelaide. Now people are going out to buy all those things that they wish they had had before the storm. It is unlikely that we will go through the same thing again for decades, but it makes us feel better.
So when someone acts in a way that feels odd, maybe there is an underlying bit of history that we are unaware of.