When someone claims A => B, it can be true either because there exist cases in which A is true, and in those cases, B is true also, or because A is never true. It is true to say: "all wabajahooies are yellow and slimy," if there are no wabajahooies in existence. Otherwise stated, every set contains the empty set.

As for "Indeterminism," I may have misunderstood, but what's the difference between having events that are not predetermined and saying that those events are random?