You don't have to be a mechanic to know how to drive a car. Nor is it a prerequisite for any great artist to be an expert in the chemical composition of paint. There may be many forces and factors that are difficult to understand in our lives, but that doesn't mean that we can't cope admirably and gracefully with them. We just have to make the most of what we've got. And when life gives us an opportunity to understand a little more, we should seize it, of course. The discoveries that  can only help.