Certainly the better I know others, the better I know myself. When I see others clearly, I see myself in counterpoint or in affinity. I recognize that a trait that I hadn’t even noticed in myself is not universal, that it IS a trait. When I see others behaving in ways I can’t imagine, I can see some of the ways I diverge from them and could never imagine making their choices.
As a highly empathetic person I have often been unable to distinguish between myself and others. I used to not be sure which desires were mine and which belonged to others, so fused with them I felt myself to be.
But the more specific one gets about people, the more our beautiful diversity and divergence comes forward.