Board Thread:The Matrix Archives/@comment-87.95.67.37-20130728200711/@comment-26975268-20130729014507

Tybort wrote: Also, was this created on The Matrix Archives?

Yup! This thread should be at The Reference Desk, but I'm not sure if I'm allowed to move threads.

To answer the question, though, I'm pretty sure the Doctor is able to save victims of the Angels without damaging time. He did, after all, save himself and Martha in the TARDIS in Blink.

However, as proven in Angels, if the Doctor were to see an older version of the victim or read about his time stuck in the past, he could not change the past. That would create a paradox.


 * It's already happened. Rory, you've just witnessed your own future. [...] If Rory, got out, it would create a paradox.

The reason the Doctor couldn't save Amy and Rory is because several paradoxes had already occurred in 1930s New York. Why he couldn't pick them up at a later time in a different place and then just make a fake tombstone is left unanswered in the script. I suppose Amy's afterword must have clinched it.

The reason he didn't take Billy with him in Blink is because he needed him to add the easter egg to the DVDs. Without him staying behind, the plan would never work and the TARDIS would never arrive.