But we would still not know how the boy was enabled to make the right predictions.
If asked to explain his successful predictions, we would be at a loss.
In fact, of course, this phenomenon does not occur; people's intuitions are notoriously fallible, and only when they turn out to be right do their authors proudly claim that they "knew it by intuition" (when the intuitions don't turn out right, their authors do not advertise this fact) But if the intuitions did always turn out to be right, what would we say? Should we still say that he didn't know which horse would win the race, or that he did know but we don't know how he knew?