An objection asks why understanding a component must always occur only after understanding the whole. Someone may have learned the component independently and earlier. The objection risks conflating a person's historical order of learning with the analytic route of a word's indication.
The issue here is what happens when we analyze a particular word's inclusive indication: we identify its conventionally assigned whole sense and then consider an internal component in its own right. This does not imply that a learner has never encountered the component before learning the whole.
One may know what “animal” means before learning a technical definition of “human.” Yet the taḍammun of “human” toward “animal” is analyzed through animality being included in the relevant full conception of humanity.