Hypothesis:

• The prophesied 'end of the world' will involve meddling with Time.

Some semi-random observations/conjectures supporting the hypothesis:

• The 6-hour information transfer limit is tied to the Interdict of Merlin. A 6-hour timeframe seems rather arbitrary in terms of describing a purely natural constraint of the underlying physical reality. It makes perfect sense, on the other hand, as a human-designed complementary measure of enforcing the Interdict as otherwise wizards would be traveling back in time to learn from old masters before their deaths, thereby negating the Interdict.

• The whole plot generally revolves around paradoxes and uses of Time. Atlantis is supposedly 'erased from Time' (not destroyed). Hogwarts castle's random changes have time patterns (certain years and days in the week). References to students getting lost and coming back as old men or going higher than the castle's highest level (implying shifting passageways transporting people into Hogwarts castles in some alternative times/realities?).

• Repeated allusions to Harry destroying stars is unlikely to be referring to a literal physical annihilation of all visible stars. I would place a much higher probability on the possibility that the current time/reality in which Hermione is irrevocably dead will be destroyed as a result of Harry deciding to change the fact.

• What spells are most likely to be declared so dangerous to warrant the Interdict? No magic (aside from Time travel), no matter how destructive, comes even close in my mind to justify Merlin sacrificing himself to impose this rather oppressive restriction that limits indirect information exchange of ALL wizards in ALL of time, present AND future!

• The first time we hear Quirrelmort's inner monologue is when we learn that he is honestly afraid of what Harry will do. I cannot think realistically what Harry can do to threaten his 'modified' interstellar probe at present time unless he can prevent it being modified (horcruxed?) to start with, i.e. go back in time.

• Time paradoxes are ruled out. Why? Because reality is somehow ensuring consistency? But then, how could Atlantis 'erase' itself from Time? I assign much higher probability that this restriction is designed as part of the Interdict again rather than a naturally occurring phenomenon.

Thoughts?