There's always a backstory, an explanation, something to help us understand why things are the way they are. The problem comes when we don't get this backstory and we see an incomplete picture, causing us to process a situation based on the few fragments we're piecing together. 

The bible encourages us to lean NOT on our own understanding (Prov 3:5) but to trust in God. He is, after all, the only one who knows everything, the only one with full understanding.