Throwaway comment in POA

[mullsym255]

No: HPFGUIDX 33516

I always took the comment as JKR's way of foreshadowing that Lupin 
knew Harry because of his relationship with James. However, I always 
felt that it was a bit of a mistake on her part because first of all, 
Harry's famous. Therefore, even if Lupin wasn't friends with Harry's 
dad, he could have checked out the scar and thought to himself "oh, 
Harry Potter". The second reason that it wasn't the best way to 
foreshadow a relationship was that I believe Hermione or Ron called 
out "Harry!" several times after he collapsed to try to revive him. 
So, Lupin would have known his name if he'd heard either of them. So, 
basically I think it was an attempt to foreshadow that JKR goofed up 
a bit. 

Tracy