Why: there is no end to Krishna's divine manifestations, what has been described is only a brief indication of their extent, again explicitly acknowledging the incompleteness of even this very long list.

In life: even an unusually thorough explanation of something important is still, honestly, only a partial indication of its full extent, complete coverage of anything genuinely significant is rarely actually possible.

Teaching: hold your own most thorough understanding of an important topic with some humility, treating it as a solid but partial indication rather than a claim to complete, final coverage.