You’re right. In fact, in the story we already have questionable use of information travel:
There was another pause, and then Madam Bones’s voice said, “I have information which I learned four hours into the future, Albus. Do you still want it?”
Albus paused -
(weighing, Minerva knew, the possibility that he might want to go back more than two hours from this instant; for you couldn’t send information further back in time than six hours, not through any chain of Time-Turners)
- and finally said, “Yes, please.”
If there were a hard limit of some sort, then Dumbledore wouldn’t be able to go back more than two hours after hearing that question, no matter what, because “there will be information in 4 hours” is itself information. The limit is somehow more complicated than that, which opens it up for abuse.
You’re right. In fact, in the story we already have questionable use of information travel:
If there were a hard limit of some sort, then Dumbledore wouldn’t be able to go back more than two hours after hearing that question, no matter what, because “there will be information in 4 hours” is itself information. The limit is somehow more complicated than that, which opens it up for abuse.
I expect this to be a plot point eventually.