Is causation the only way of recognizing succession in experience?
I have just come out from under the 9-lecture Robert Wolff YouTube presentation on the Critique. It was a clear exposition, but on one point I feel unclear. Kant seems to saying that the imagination starts with the manifold of intuition and then reproduces its contents in a certain rule-determined order, which unifies it and results in the creation of objects in experience. The implication is that a rule specifies the order in which objects appear, and the ordering principle is that of causation, according to the Second Analogy. . Does this mean that the only way we know which things come first is determining what causes what?. Hume had the opposite viewpoint that the temporal order is given in experience and we empirically determine causation by induction.
Seems to me that temporal order is often obvious without our being able to ascribe a particular cause to it (we often do not know). Is the assumption that there must be a causal connection enough of a rule to establish temporal order? The assumption that everything has a cause is a good heuristic assumption that causes us to seek knowledge, but I don't see that as providing an adequate ordering principle. I feel I must be missing something. Can anyone help?