I know that the Present Perfect is used for events which:
- occurred in an imprecise point of the past and
- are "connected with the present".
However, this last definition seems vague and subjective to me.
For instance, it is clear to me that I could say:
- I have never seen this movie.
- As a child, I never saw this movie.
But what about:
As a child, I never saw/have seen this movie, and I still feel sad for that.
This past event obviously affects the present. Is "as a child" a precise enough point of time to always trigger the Past Simple?