robin,
Don't get caught up in the etymology of the word "
prediction".
If I "predict" something before I find evidence of it, that's still a prediction, even if the event happened in the past.
For example, I can "predict" Napoleon's shoe size, as a ratio of his height, without knowing in advance what it is. Then I can go to the shoe closet and verify or falsify my prediction.
The "pre" refers to the order in which we learn things, not the order in which they happened.
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