Biography
I am an academic who encountered FiM in the fall of 2011 (having previously watched G1). It says something about me that after watching the "Starscream vs Rainbow Dash" video, I spent a week working out how you'd make pony-bots that could actually do that.
I don't write very often, but from time to time I may post a short work here. I've greatly enjoyed many other authors' works; you can find some of them in my favourites list.
I'm willing to help proofread/edit stories, if they catch my interest, but be warned that I'm old-fashioned enough to prefer to do this by marking up hardcopy and mailing it back to you.
From time to time, I may ask permission to make printed/bound versions of others' works. I make these out-of-pocket and distribute them for free (the idea of getting others addicted to ponyfics amuses me). Even with full permission, I do not want to touch electronic distribution or paid print runs. If you want to handle that for your story, though, I'll gladly provide the LaTeX source files and PDF output.
Let me stress again that I only distribute works after asking first (author and cover-artist, if any). Copyright is to be taken seriously.
(Avatar artwork by Miss-Kiki)
Enjoy.
Thanks for adding How "My Little Pony: The Movie" Should Have Ended to your favorites! :)
2258806
Yes and no. Pretty much any situation that allows FTL in GR allows you to construct closed timelike curves, and pretty much any situation where you have one part of the universe moving FTL relative to another gives you a) an event horizon and b) a weird coordinate discontinuity at the horizon (at least from any single observer's point of view).
That last bit is actually the result of the way the observer's viewpoint is chosen, rather than reflecting a real discontinuity. Building coordinate grids is (usually) done by imagining space filled with fixed-length rods at rest with respect to the chosen viewpoint. Problems occur when the situation makes it impossible to have a distant point be at rest (such as when that distant point is on the other size of an event horizon). So, you get your coordinate system blowing up at the location where this occurs and becoming imaginary beyond it. The right way to solve this problem is to instead define coordinate systems that are valid within a local patch of space but don't try to cover all of it, and then walk around building a map of how those local coordinate frames relate to each other.
Closed timelike curves, while self-consistent within general relativity, cause enough problems elsewhere that a lot of scientists strongly suspect there's some rule or side effect that we don't know about that forbids them/makes it impossible to set up situations that would produce them. The same applies to negative mass and a number of other fun things. That said, nobody expects any new discovery of such a rule to invalidate relativity (any more than relativity invalidated electromagnetism or Newton's laws); it'll just add context instead.
2258734 That's less convincing than I'd expected. It seems to me more of a sign of a bug in the theory than a solution.
2258391
As for FTL motion in a rotating frame, that's actually been studied; what you get is a strange configuration of space where everything sufficiently far from the center forms "closed timelike curves" (time travel loops). Ye Wiki's article on one such situation is here.