Not at all. To elaborate a it more, I mean two things.

First, this misses the point of most top schools, at least in my experience. (I can't speak for non-top-schools.) At my T6, the goal was never to go through all the variations and memorize the outcomes. The goal was to (a) take a variation (a case), (b) identify the underlying justifications, both stated and unstated and the way these tie into other cases, and (c) predict a future case. Second, this misses the fact that although the variations might be finite (I don't know), there are so many possibilities that you can't possibly be taught them all.

Take these two facts together. When you work at a biglaw firm or a clerkship, most of your work isn't going to be going through your typical variation. No one would shell out big money for that. In my admittedly limited experience, the work is going often going to be figuring out and predicting the areas of the law that are unclear and poorly developed.

That you have memorized 39 variations on how blackacre might be clearly transferred is irrelevant except for the bar exam. The question is, can you figure out whether blackacre was successfully transferred on the 40th occasion?