Murphy's Law is the philosophy that if it is possible for things to go wrong, things will go wrong. It makes sense because a lot of things that can go wrong are going wrong.
There have been many wildfires this year. These wildfires were a thing gone wrong. Was it possible for these wildfires to start? Yes because someone could have had a campfire that got too much wood and then that fire would have gone wild and burnt trees, creating a, you guessed it, wildfire. This is Murphy's Law in action.