But observation is the point of most astronomy. Determining causatiom is usually not the goal. Observing people's weight over time is ome of the reliable and u

But observation is the point of most astronomy. Determining causatiom is usually not the goal. Observing people's weight over time is ome of the reliable and useful things nutritiom research has accomplished. But the goal of the kind of research being discussed here though is to study causation.