Originally Posted by Dave-H:
“Was I the only one absolutely horrified by that?
Of course if time travel were actually possible, and I'm well aware that it isn't and never will be, for very good reasons, any time traveller could do exactly what Amy and Rory apparently did.
Unless this is explored further and/or explained later in the series, I feel this is a bad error of judgement by the writers.
”
It is curious certainly, because it is back to front.
Had they just been "sightseeing", then that would have been one thing (it happens in BttF where a later Marty sees an earlier one). But that they WERE SEEN, in effect the reverse is much more problematic, because it gives the early version information they shouldn't have.
Having said that, it is very much the same thing as happens in 'Blink', where the answer is invented and put in a loop.