They don’t follow one another. I may observe something, like repeated celestial movements, enough to predict the next occurrence, but not understand the way the universe works. An example is astronomers predicting stars appearing but still thinking the solar system revolves around the earth. Or, I may have deep understanding of something, but the very nature of the thing or system may be random or unpredictable. You may know exactly how the lottery works, but you cannot predict what numbers will be drawn tonight.