[HPforGrownups] Re: Time Turners and Lupin's apparent premature ageing

[Jordan Abel]

No: HPFGUIDX 156993

Steve/bboyminn:
> I hestiate to get into this, but what if you died during your year of
> time travel, there would be no you to take over for you at the instant
> you time traveled. While I don't want to start another discussion on
> the mechanic of time travel, I am trying to point out that the greater
> the span of time in which you time travel, the greater the risk that
> you will never come back.

I can't see any basis for a requirement to take over for yourself at
the end like you're describing. It may be "compulsory" to do so
according to the regulations governing time turners, but failing to do
so does not actually cause a paradox.

> I would also like to point out that while time traveling, you must be
> very careful not to alter time/history in any significant way, or the
> furture you were in when you time traveled may not be there when you
> get back. (The Butterfly Effect)

You can't really cite an unrelated movie for stuff about how time
travel works because there are so many ways of writing it. TBE in
particular seems to use a branching-timeline (i.e. "many worlds
hypothesis") mechanic which doesn't appear to be present for HP.

The events of POA, for example seem more like they follow the Novikov
self-consistency principle (qv wikipedia article of that name)

See also the list of types in the wikipedia article on Time travel.

One problem is that people will often assume one of these views is
"how it works" and no others are considered

-- 
Random832