jonsmth wrote...
manipulation of time is within her reach, as it is part of the Haruhi's universe
so if someone's age was 15, that someone is definitely 15
when the world was created 3 years ago, it also includes both the past and the future
that's why time travelers exist...
...but.. time travelers can't go back further than 3 years from Haruhi's time... that should contradict my theory though...
3 years ago, Haruhi caused some strange thing to happen to the universe, triggered by her realisation she was just another drop in a vast ocean. She didn't simultaneously destroy an old universe and create the current one back then, but she merely wished to see things out of the ordinary, hence the creation of closed spaces, time travelers, espers, and aliens. I would think that Haruhi would be somewhat aware of her own powers if she somehow destroyed the old universe and recreated it then.
If that is true, Haruhi is still a first year high school student. In Japan, most first year high-school students are 16 years old. I suppose 15 would be an acceptable answer too, but 16 should be correct.