From Newsgroup: rec.arts.drwho.moderated
From Address: solar.penguin@gmail.com
Subject: Re: The way River Song won't be fixed

Ken Arromdee wrote:

> In "Turn Left" the bug creates an alternate timeline where the Doctor dies
> in 2006.
>
> If the Doctor dies in 2006, he doesn't die at the start of the 2011 series
> (whether as flesh or real).
>
> The Doctor's death at the start of the 2011 series is a fixed point.
>
> Therefore, the bug *can change fixed points*.

But can it change them _after_ they've become fixed?  What if it can
only change not-yet-fixed points?

If fixing points works in a Schroedinger-style way, then points become
fixed when they (or their effects) are already known by time
travellers who are going to have been affected by them.  So in this
case, the Doctor's death probably only became fixed when Amy and Rory
witnessed it.

Alternatively, if you don't like that theory, remember that the bug
was working for the Trickster, an evil, powerful, god-like alien from
the Sarah Jane Adventures.  The bug might only be capable of changing
fixed points with the Trickster's help.  And since the Trickster wants
the Doctor dead, he's not very likely to offer that help!

>
> I'm sure there's a way for the Doctor to sic that bug on the Silence and
> change the timeline to fix the whole River Song mess.

Nice idea, but the mess is to big to be fixed that easily.

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