ABSTRACT
This work deals with three problems each more special than its predecessor. One purpose is just their formulation, but also they are solved and discussions go around the way this is done.
It might seem from simple logic that a problem could stand alone, in empty space, but this is not the usual way with problems. They belong to currents from which they cannot be separated, so if the current dries up perhaps they would disappear. These three problems are in a particularly well-known voluminous, sickly current: economic index numbers. In this there is a widespread practice, and then there are theories that go around but which, it has been argued, have little to do with the practice, and there are myths. Corners of the problems have broken the surface but they never would float into full view, and to make them do that could be an objective. There should be some appreciation also of the current which carries them since otherwise they would have not much sense.
