A few days ago, I steamed a fish. When it was cooked I used a pair of tongs to take it up from the steamer. Then my attention slipped for a second and the tongs loosened a little and some sauce and ingredients spilled onto the table. It took some effort to clean up the mess. I tell myself to concentrate on what I am doing in my future tasks.
Several years ago I was hurrying home from the car-park. The ground was wet as it had rained. There was some bird shit on the ground. I didn't notice it. I slipped on it and fell. Fortunately nothing serious happened to me. After that accident I am very careful walking on wet surfaces.
So you see, people learn through bad experiences.
We read about the accident along the PIE involving many vehicles. I think it was that the drivers were following the vehicles in front of them too closely. Even if they were attentive, the distance was too short for them to stop without hitting the vehicle in front.
There are a lot of things you have to do and a lot of inconvenience if you are involved in an accident. I'm sure these drivers will learn from the bad experience.
However, there are things we cannot afford to learn through bad experiences. Racial riots for example.