Although it depends on your perspective as to whether the idea of the world operating at random is comforting or horrifying, the fact remains that something completely unexpected could happen at any time.
Although there are logical explanations for why machines suddenly explode or why hot climates can suddenly experience massive hail storms, those explanations usually aren't clear to those going through these incidents.
And as one tragic case from the U.K. demonstrates, not even the classic "what if" scenario of someone literally falling out of the sky is impossible.