Our desire to categorize things, and understand things, requires a degree of simplification. Reality is immense and a total understanding unknowable. People are immense and a total understanding unknowable.
So when we simplify people, we deny them their full complexity; the many shades, moods, perceptions and ideals bundled together to make their person. Simplification allows violence; it is not only demeaning but also other-ing. Us and them, real people and the simple-people.
Memories can also be simplified into ‘general feelings’ of the past. General sadness, general frustration. Break it apart – how, why, when? What really happened? Who was that historical figure really?
The truth is always too big to be grasped. Be satisfied with your handful, and accept complexity.