I am not sure if we are talking about the same thing. What I asked about in my question was not about predictions based on past events. It was about someone saying that "if some things were this way in the past other things would have happened otherwise" - and I asked if such speculations about what could have happened can make any sense at all since things had already happened - and because of the fact that they had already happened, then, I think, it must have been the only and only possible way for them to have happened.