Why: Krishna knows all beings, past, present, and future, but no one knows him, again emphasizing an asymmetry between being known and knowing, a gap most relationships and self-understanding also involve to some degree.

In life: you are often known, or at least perceived, by others in ways you don't fully see about yourself, and vice versa, that asymmetry is just a normal feature of relationship.

Teaching: accept that being fully known and fully knowing someone else, or yourself, are two different, unequal things, and don't expect perfect symmetry in either direction.