"By understanding the nuances of the prophecy," said Harry. "This branch of magic is a tricky thing. If you know something is going to happen, do your actions lead inevitably to it, or do they make it occur? Even if you try to prevent it? It's impossible to know. But the difference between my parents and Dumbledore is that my father was equally as clever as him and my mother far more insightful. Together, they understood the prophecy far beyond Dumbledore's basic, flaky interpretation.