Alderaan said:
It felt like Rey was reaching into the audience and using our film knowledge from previous movies to teach herself something she otherwise didn’t know and had no way of knowing. I’m sure they will retcon this in the next film and say she was trained as a little girl and had her memory erased, but that’s just so lazy that I find it offensive.
Well she did know the “stories” that more or less is the events of the OT. Since we know very little of what’s going on in the galaxy in this part of the canon, it’s hard to say how many details she knew. However, she did refer to the Falcon having done the Kessel run in 14 parsecs. Ok, she got the number wrong, but that’s still a very specific detail for her to know. It seems that Luke, Han, Leia, etc. have become quite the folk-tales in the last 30 years.