It doesn’t preclude scenario B. It just makes it unlikely.
I have a “Many Worlds/QM” style interpretation of time turner mechanics. Basically, all of the possible interpretations of the information+metainformation you have transmitted via time turner “exists” or is in a kind of superposition, until receiving information precludes them. Making Scenario B overwhelmingly unlikely is precluding it.
I have a “Many Worlds/QM” style interpretation of time turner mechanics. Basically, all of the possible interpretations of the information+metainformation you have transmitted via time turner “exists” or is in a kind of superposition, until receiving information precludes them. Making Scenario B overwhelmingly unlikely is precluding it.
How unlikely does it need to be to be precluded? The given Scenario A is pretty unlikely.
Well, I note in a comment somewhere, that it would have to be a version of Amelia who was rather ditsy about time.