Quote:
Originally Posted by Heatth
No, wait. How do you (or anyone) know that?
Anyway, I kinda agree with you.
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There are several ways I can see to take that question: "What evidence is there;" "Koizumi-style;" and "What about before?"
Evidence: Big Bang. The equations that work out in support of the universe as we know it being ~13.7 billion years old. The observed rate of movement of matter in the universe indicating it was all at the same place around 13.7 billion years ago.
Koizumi-style "everything was made five minutes ago, even contradicting evidence" argument: This argument cannot be proven either way, and is meaningless.
Before: Alright, there is a chance that our universe had a cause, and was created by an event in an older universe. That would put existence at older than 13.7 billion years, but doesn't defeat the essence of the argument. If there exist(s/ed) a universe that created ours, then the question becomes where that universe came from. Ask this question enough and you'll either come to a source that came out of nothing, of find that at some point the universes loop around. Either way, existence would be acausal.
What impact any of this has on the Haruhi-universe is questionable, as there is nothing forcing Tanigawa to use a sensible system of time-travel. The point, however, is that it is perfectly possible for something to exist without having a history to back it up, and thus paradoxes are not important.
Quote:
Originally Posted by Kaisos Erranon
Causality still matters for everyone except Haruhi.
Nothing anyone but Haruhi (or someone using her powers) does can affect or alter the past.
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You seem to be confusing causality with a predetermined future. They are not the same. There are two acausal events that have occurred in the series so far, and only one of them directly involved Haruhi:
The Bamboo Leaf Rhapsody incident and when Kyon and Mikuru learned of the shape of Mikuru's mole.
Both of the aforementioned events are completely acausal, but both of them were absolutely necessary for the future from which Mikuru came. Acausality and a predetermined future are compatible, its just that acausal events cannot be predicted before they occur.