There is a line with an arrow connecting cause and results. That line is invisible to most people.
It's difficult to know how to manage a farm, for example, from one year to the next. Every year's weather is different. The line between good farming and good crops always moves.
It's always changing, always surprising. We never stop learning how to find the line no matter how old we get.
Some never master the art of learning the line. Success doesn't occur according to a checklist or multiple-choice test. Life's line is organic, so must be our understanding of it.