I have read many online articles. I've read questions and answers on this site. I still can't get my head wrapped around the difference between
past simple and
I know the difference is between finished time (use
past simple) and unfinished time (use
present perfect). But as a non-native English speaker, this still makes no sense to me. I am not implying any kind of time period.
I have posted on SE
I posted on SE
I just want to convey that the action completed in the past. I don't want to provide any connotation whether the action just completed, or completed at certain period in past.
Maybe with "I", I know the time period, but what if I am talking about someone else.
He has posted on SE
He posted on SE
I don't know the time frame that "he" did the action. I don't know what "he" was planning (continuous action, or at specific time). I just know the action took place in the past. I don't know if it just finished. I don't know if there is a consequence to the action or not.
It seems to me that I am forced to imply a time frame. So my question is: if I don't want to imply any time frame, or at least to imply as little as possible, what should I use?