You are mean, think about the poor author! Although I do have very little sympathy for the bozo transcribing my story.
If you don’t have time travel to fix all the implausibilities, mistakes and oversights in your work you end up looking like you slapped the book together in a matter of hours just to get a quick buck!
Now, of course, that’s probably true if you have such things, but you don’t want it to [i]look[/i] like it.
So my point is, Time Travel is required to fix sloppy writing. Just like dream sequences (it was all a dream!) are required when authors back themselves into a corner which they’re not smart enough to get out of plausibly otherwise (which seems to happen a lot on TV)