The weather is unpredictable, just like this world. What do you mean unpredictable?

The weather is changeable, just like this world. Unpredictability means that life is as changeable as the weather. It means that the weather is unstable and the change of rain or shine is unpredictable. Metaphor means that people are moody and emotionally unstable. It is the uncertainty of life that describes the world with uncertainty of rain or shine.