Time-turning was to have MORE time (was The point of Time-Turning)

[delwynmarch]

No: HPFGUIDX 132177

Davenclaw wrote: 
"If there is no way to "change" the past, but only to "participate" in
it, then wouldn't the TT-Harry already know if he had encountered his
TT-self?"

Del replies:
Well, PoA answered your question, didn't it? Harry DID see his
TT-self, but he doesn't realise it. And sure enough he thought that
something not-normal was happening: he thought he saw his dead father.

Davenclaw wrote:
"Now, just so we understand, since you are saying that the past can't
 be changed, but only fulfilled, then the only reason you would use
the TT would be to witness or participate in a different set of events
than your non-TT self. So Hermione can be in two classes at once. You
would NEVER say "well, what just happened was really awful, let's go
change it!""

(snip)

"So no one would actually ever use the time-turner, since they would
never know that it was necessary in order to bring about events as
they occured, unless they saw something when they weren't time-
traveling that tipped them off to the presence of their time-traveling
selves.  Or in this case, something tipped off Dumbledore."

Del replies:
Once again, PoA answered your question already. In both cases of
time-turning that we know of, it was NEVER a matter of CHANGING or
fulfilling anything. It was just a matter of MORE TIME. Hermione
needed more time to take her additional classes, and if my memory
serves me well (I don't have my PoA book), DD said that "they needed
more time". In both cases, it was only a matter of stealing some time,
it was NEVER a matter of changing or fulfilling anything, even if the
kids thought differently. They thought they were going to change what
happened to Sirius and Buckbeak, but this is NOT what DD said: he only
said that in order to save Sirius, they needed more time... Changing
things was the consequence of using the TT, it wasn't the cause of it.

Del