the analogy of the face in the mirror helps explain that the "I" is not a separate, real entity. like a reflection dependent on a mirror, the "I" is merely a product of the "aggregates," showing that the self is conditional, not permanent/ everchanging.

It is interesting that the text says our mental and physical aggregates arise from a "conception of I which is false in fact". It seems to be saying that our very existence is rooted in a false idea.