Can the past, help or harm the future?

If we could change the past, how would it benefit the future. Would it have the same or similar outcome? or:If we could change the past, how would it

If we could change the past, how would it benefit the future. Would it have the same or
similar outcome?

or:If we could change the past, how would it benefit the future. Would it have the same or similar outcome?

or:You are talking about science fiction. It can be anything your story telling skill can support.

Tags:past,