POA Prongs Patronus - getting time travel terms right.

[nkafkafi]

No: HPFGUIDX 100458

> Susan:
> Similar to this is the movie *Timeline*.  For history to be 
correct, 
> they _have_ to go back.  Won't explain any more, but if you see the 
> movie, it's easy to make the comparison to time travel in PoA.

Neri:
Slightly OT but I like to get my time-travel terms correct (it's 
complicated enough as it is...). The time travel in "Timeline" was 
actually of a different type, simpler than the POA type. 
In "Timeline" it was a fixed wormhole. This means that the past in 
the other side of the wormhole is synchronized with the present. When 
an hour passes in the present, an hour had also passed in the other 
side of the wormhole. Very much like different time zones. In the 
other side it is always (say) 754 years, 96 days, 5 hours, 32 minutes 
and 13 seconds before the present, and you can only go to this 
(changing) time.

In contrast, in the POA time travel you can choose how many hours 
into the past you want to go, and you can even go there more than 
once, so there might be even more copies of yourself around. Hermione 
was actually doing this. According to Ron reading her schedule in the 
first day of school, she had THREE classes at the same time, so she 
actually was in three places, not just two, at the same time.

But you are right about your point. In both these methods of time 
travel, the time traveler must go back in order for the "correct" 
history to happen.

Neri