Subject: She contradicts what's already established.
Author:
Posted on: 2016-07-27 11:03:00 UTC
From what we've already been told, experimentation with long-distance time travel (long time time travel?) has been severely restricted ever since the Mintumble incident, and even if experimentation had gotten to the point where they were able to time travel back not mere hours, but decades, what are the immense odds that the only two experimental time turners able to do that not only survived the destruction in the Department of Mysteries, but ended up in the hands of the people where they'd be most crucial to the plot? There's coincidences that move the plot forward, and then there's coincidences that are just plain outrageous.
Even ignoring the aging issue, how do Albus and Scorpius get away with altering the past so much only for things to instantly reset to normal once they go back? Yes, we had the My Immortal-esque alternate timeline, but that got eradicated with no noticeable side effects on the present timeline. When Mintumble did her thing, she "caused great disturbance to the life paths of all those she met, changing the course of their lives so dramatically that no fewer than twenty-five of their descendants vanished in the present, having been “un-born”" It doesn't outright say she directly interfered with their lives, just that she crossed paths with them (a rather tenuous interpretation, I know, so feel free to ignore it), which reads to me like the butterfly effect. And that's not getting into the problems her time travel caused for the present, what with Tuesday lasting two and a half days and Thursday only four hours. None of that happened in the play. Just go back, hit a reset button, and don't worry about having to deal with the consequences that should have arisen.
(Apologies if any of this is snappy or incoherent. It's six in the morning and I've been up all night so I'm probably not at my most lucid right now, but I didn't want to sleep on this.)