I’m not happy with the rule about time travel not allowing travel more than six hours back of information. If that’s the case then time travel should be much less common since anything sharing the same light-cone segment will transmit information back based on minute changes to gravity. This only makes sense if it means information that humans would regard as information because magic works like that. If that’s the case, I’m really waiting for Harry to find the explicit rules for that and then find a loophole to engage in major havoc.
I think I can actually deflect this one by appeal to Actual Reality. (Some familiarity with quantum mechanics required.) Note that photons, by virtue of their momentum, have gravitational pull; yet in the quantum double-slit experiment, the gravitational pull of the photons is not enough to “collapse the waveform” as to which path they have taken. This seems to me to be exactly the same sort of “prohibited information” as in the fic. The best explanation I’m aware of for this is that the uncertainty in the quantities involved is high enough that, even though the photons’ gravitational pull could in theory transmit information, in practice the resolution of the universe is simply not high enough for that to happen. The same thing could be at work here.
I feel like I just used a sledgehammer to kill a fly.
I think a pretty straightforward answer is that for it to be information, an intelligent being has to perceive it as such. I don’t think there’s a loophole—if you would successfully send information farther back in time using any means, Time Gets Mad, and things somehow work out so that you don’t. And even if you get around that, unspeakably bad things probably happen.
However, I suspect that the six hours is an artificial safeguard built into the spell. You could PROBABLY create a new time travel spell that can go seven or eight hours without breaking things. I doubt the 6 hour limit is actually the snapping point. It’s just the limit to what you can do before you start to deal damage to reality. Going farther once might work, but if everyone did it then Very Bad Things happen. If the payoff matrix for “everyone defects” is that the universe stops existing, you should probably cooperate.
Edit: NVM, reread the end of the chapter, and it seems like if there’s any way to go more than six hours, period, it’s such a well kept secret that no one thinks its possible. Then again, this would not be the first time Eliezer has employed the “powerful weapon being an amazingly well kept secret” thing, and it was somewhat foreshadowed when Harry mused that maybe scientists had come up with things worse than nuclear weapons.
Either that, or that’s the size of the simulation’s event buffer. ;-)
Assume they are in a simulation—why would it have an event buffer created able to compute time travel at all, and why pick 6 human hours (equivalent) as the magic number constant for it?
Presumably simulating a human brain is harder than simulating the same mass/volume/atom count of solid metal, so as the population increases has the time-turner interval shrunk correspondingly? Seems unlikely it would settle on such a round number if it was changing with population. (Or is that why magic is getting weaker—as the simulation computer fills up?)
Assume they are in a simulation—why would it have an event buffer created able to compute time travel at all, and why pick 6 human hours (equivalent) as the magic number constant for it?
It occurs that magic is basically the ability to hack the simulation; the wizards who developed time travel didn’t know what was actually safe, what was unsafe, what would crash the simulation, and what the simulation could actually even do—so they picked the weakest version of time travel to implement (both branches consistent) and slapped a bunch of arbitrary limits on it so it (hopefully) couldn’t break anything major.
Also, Merlin in T.H. White’s The Once and Future King lives his life backwards in time, from old age to youth—is that canon!Merlin, and does that property carry over to the Merlin to whom the characters refer in HP:MOR?
Assume they are in a simulation—why would it have an event buffer created able to compute time travel at all, and why pick 6 human hours (equivalent) as the magic number constant for it?
Why not? I think it’d be kind of cool to simulate a universe with magic and I’d feel altogether clever if I could implement time travel in it. :)
OK, simulating time travel for the hell of it sounds good, I still question the buffer limit idea:
“Simulated time travel now working, but what should we set the Horological Constant value to?”
“Dunno. Three years? A thousand years? Just enough time to undo saying something rude? MAX_INT seconds? AVAILABLE_MEM? User configurable?”
“Oh whatever, it’s time to go home, I’ll just put six simulated hours and be done with it. Shall I start locking up?”
That would be a disappointing reason for the 6 hour limit, and an unconvincing way to make the universe work so that the plot works. I hope the 6 hour limit is either not real, or something more interesting.
My first hypothesis would be simple processing complexity. Time travel is complicated. It is the kind of problem that grows ridiculously with time and space. The programmer has been able to invent an algorithm that simplifies it for low dimensionality but even with that algorithm higher order time travel would still take too much time on the given hardware.
Second: the programmer initially programmed the buffer in to allow for short term time processing. Things like the soda that prompts you to drink, spell dodging time hop magic, etc. It didn’t even occur to him that the wizards would find a way to exploit the mechanism for long term use.
Another possible reason to have a time-buffer in a world simulator (which, btw, I don’t believe the HP:MORverse is) is that the simulation doesn’t actually do everything in real time.
Rather, you may have situations where process A and process B are defined as taking the same number of simulated time-slices, but process B takes more actual time to simulate for whatever reason, and so the simulation of process A is halted until process B catches up. (This presumes that it’s not possible to reallocate simulated processes across simulating resource threads with arbitrarily fine granularity.)
Which means that at any given real-world moment, some parts of the simulation are at timeslice T, some parts are at timeslice T+1, and so forth. The six-hour limit might simply reflect the typical spread, and simulated time-travel might be a hacking of the system that is bound by that spread, rather than an explicitly simulated capability with an explicitly simulated upper bound.
Something like this is true of the only reality-simulating system we know of, namely our own brains. For example, color phi is a kind of simulated time travel where, in response to a perceived event E1 at time T, your brain constructs an illusory event E2, which you experience as occurring before T. This works because different parts of your brain construct your experience of time T at different rates, and tag those parts as occurring at T; the experience of simultaneity is constructed by your brain.
Which means that at any given real-world moment, some parts of the simulation are at timeslice T, some parts are at timeslice T+1, and so forth.
If the six-hours is to avoid too much time-skew, it’s a hack and one would expect better from simulation-builders.
There are plenty of ways to efficiently calculate differing time-space regions, using lazy evaluation or equivalents thereof. For example, the famous Hashlife algorithm for Conway’s Game of Life does exactly that—different regions can be billions or trillions of generations apart thanks to memoization. Lazy evaluation proper allows weird techniques like the reverse state monad or circular programming (aka time-traveling).
I hope the 6 hour limit is either not real, or something more interesting.
It may be that the limit is not due to the physics itself but because of the intervention of an early wizard. Unbounded time travel is one of the most powerful abilities imaginable. The first witch to exploit this and take ultimate power would obviously want to prevent others from overthrowing her. It would be in her best interest to find a way to put constraints on the powers of others. Longer than six hour anomalies may well trigger destructive countermeasures.
r is that why magic is getting weaker—as the simulation computer fills up?
If the simulation is filling up that might make time travel less powerful but I don’t see why the processing/resource constraints should make other forms of magic also need to be restricted.
A 6 hour simulation buffer would explain a T-6hour limit, but not that you couldn’t go back into the same simulation buffer more than once, or that you couldn’t operate on the 4 disjoint 6-hour segments of the 24 hour limit.
With an un-shelled Time Turner, could Harry go backwards from 23:59 to 17:59, then cover most of the same 6 hour interval again by jumping back from 00:01 the next day to 18:01?
Depending on how the 6 hours in 24 constraint is imposed, (Scotland’s midnight-midnight, noon-noon, whenever the operator’s variable 24-30hour days roll over, 9:00pm-9:00pm, a leaky-bucket token at 15sec/min, or whatever), what happens at 9 hours past lunch could be odd.
If it is a simulation, and time travel devices are limited in ways to save on computation and such, some of these restraints make sense: the quibble over what counts as information is resolved as “anything that will force the simulation to recalculate futures”, the simulation buffer is locked to one per time-turner because allowing an arbitrary number of retries would cause the computation requirements to explode, and Harry can get around the limit by using someone else’s “turn”, even if they can’t use it, because they have information that the simulation won’t allow to travel.
My money is on Dumbledore’s timeturner. McGonagall, Snape, and Amelia Bones won’t suspect it, all having witnessed Dumbledore receive future information (therefore he can’t travel back in time far enough). Harry will capitulate to Dumbledore’s offer of the Timeturner once he determines that a) Dumbledore knows Harry was involved in the Azkaban break, and b) being able to travel the full 6 hours will convince the rest of the wizarding world, including his teachers, that Harry was not involved. Dumbledore will do this because it suits his interests (or sense of drama) to have war declared on Voldemort.
I don’t think Dumbledore would knowingly declare war on Voldemort prematurely. If he doesn’t believe Voldemort is back, he won’t try to convince others that he is.
Dumbledore very nearly took over the wizarding world of Britain last time there was a war, according to the Malfoys. This is a good reason for him to have war declared yet again, even (especially!) in the absence of Voldemort.
Then why wait until he actually has reason to think that Voldemort may be on the brink of returning? Why not simply fabricate evidence?
I’m fairly confident that the Malfoys are wrong in their assessment of him. Not only would it be an arbitrary departure from the original canon, having nothing to do with making certain characters more rational, there are also plenty of ways he could have pursued his supposed ends more effectively if those were his real goals.
Not only would it be an arbitrary departure from the original canon
I don’t think it would depart from canon, and it would be very much in line with fanon: the fanfiction involving Dumbledore shows him as someone who thinks he knows better—and has no qualms about misleading or mistreating anyone to get them to do as he wishes. Canon never states this outright, but it does give you all the evidence you need to make a decision: Dumbledore, with full knowledge of the situation, condemned Harry to spend nine years of child abuse under the Dursleys.
Then why wait until he actually has reason to think that Voldemort may be on the brink of returning? Why not simply fabricate evidence?
People like to think of themselves as good. Many ambitious people might use unfortunate circumstances as a reason to get power even as they wouldn’t go out of their way to cause those circumstances to come about.
I doubt the 6 hour limit is actually the snapping point. It’s just the limit to what you can do before you start to deal damage to reality.
If the six hour limit is or resembles a natural limit of any kind, which it may, it seems most likely to correspond to one quarter of a day, where “day” might be sidereal, stellar, or solar (probably not civil). Hours are just… very artificial, and while magic seems perfectly happy to abide by artificial rules, this limit is likely to predate accurate timekeeping (and accurate timekeeping precedes the careful pinning down of how long an hour is!)
The “quarter-day” interpretation would have the following implications:
Depending on which sort of day limits time travel, certain astronomical phenomena would mess with time travel.
Six hours is unlikely to be an exact figure, and the figure in question may vary depending on seasonal and geographical context.
Time travel in outer space will behave very strangely.
Maybe the natural limit is some naturally derived constant that happens to be slightly more than six hours, and the time-turner was designed by humans to operate in units of exactly an hour. Which you could test by seeing if it was possible to send information back in time 6 hours and 1 second using two chained time-turners.
This makes for an interesting question: How do you test stuff like this?
It seems dangerous. What exactly breaks when you go back too far? Just the local area? Can I launch a time turner into space with a suitable automatic device and watch from a safe distance? Is having an observer involved relevant (more likely with magic than quantum mechanics)? Would testing with wizard or house elf participants be unethical? Is the anthropic principle relevant?
it seems like if there’s any way to go more than six hours, period, it’s such a well kept secret that no one thinks its possible
Yet Dumbledore says that someone erased Atlantis from time, and I’m guessing Atlantis existed for more than six hours. (Also, it was erased from time in such a way that people still know about it).
We know that earlier wizards were stronger, yet the book says “time turners can’t go back more than six hours” multiple times, so it seems an important fact and widely believed by the characters. We know that strong Dumbledore can’t do it, nor can efficient Quirrellmort (or he wouldn’t suggest to Harry the plot with Bulstrode), and that time travel can be blocked long-term by the Wizards who created Azkaban. I think it will be a matter of partial-transfiguration style understanding for Harry to find some kind of loophole.
Yet Dumbledore says that someone erased Atlantis from time, and I’m guessing Atlantis existed for more than six hours. (Also, it was erased from time in such a way that people still know about it).
I think Atlantis serves as a cautionary tale for what happens when you TRY to go back more than six hours.
Perhaps the six hour limit was placed on time travel a long time ago, by wizards much more powerful than today’s, who knew (perhaps first-hand) how nightmarishly screwy time travel could get. This sort of thing has precedent: the Interdict of Merlin prevents the most powerful magical knowledge from being passed on in writing. The reasoning is similar, too: some magic is just that dangerous.
I would not be surprised if the destruction of Atlantis involved Time Travel. Especially if we consider that this fic might be influenced by “Harry Potter and the Wastelands of Time.”
This only makes sense if it means information that humans would regard as information because magic works like that.
This is what I figured.
The same thing applies to prohibiting time travel in Azkaban, or allowing one person to tell another person (while giving them access to who knows what subtle face expressions) to talk to a person that the first one can’t communicate with.
Which suggests that to time-travel further than 6 hours back, you’d just need to completely Obliviate yourself, wiping your mind so clean that a Remembrall in your hands would blaze like a miniature sun. Best to also take the form of an infant, since you’ll be a mental one anyway.
I suddenly really hope Harry doesn’t “Where did all you zombies come from” travel back to himself as an infant to destroy You-Know-Who for the second-first-only time as the end of the book, leading to his obliviated-adult-in-the-form-of-a-child brain as the cause of his “childhood” genius.
I’m not happy with the rule about time travel not allowing travel more than six hours back of information. If that’s the case then time travel should be much less common since anything sharing the same light-cone segment will transmit information back based on minute changes to gravity. This only makes sense if it means information that humans would regard as information because magic works like that. If that’s the case, I’m really waiting for Harry to find the explicit rules for that and then find a loophole to engage in major havoc.
I think I can actually deflect this one by appeal to Actual Reality. (Some familiarity with quantum mechanics required.) Note that photons, by virtue of their momentum, have gravitational pull; yet in the quantum double-slit experiment, the gravitational pull of the photons is not enough to “collapse the waveform” as to which path they have taken. This seems to me to be exactly the same sort of “prohibited information” as in the fic. The best explanation I’m aware of for this is that the uncertainty in the quantities involved is high enough that, even though the photons’ gravitational pull could in theory transmit information, in practice the resolution of the universe is simply not high enough for that to happen. The same thing could be at work here.
I feel like I just used a sledgehammer to kill a fly.
I think a pretty straightforward answer is that for it to be information, an intelligent being has to perceive it as such. I don’t think there’s a loophole—if you would successfully send information farther back in time using any means, Time Gets Mad, and things somehow work out so that you don’t. And even if you get around that, unspeakably bad things probably happen.
However, I suspect that the six hours is an artificial safeguard built into the spell. You could PROBABLY create a new time travel spell that can go seven or eight hours without breaking things. I doubt the 6 hour limit is actually the snapping point. It’s just the limit to what you can do before you start to deal damage to reality. Going farther once might work, but if everyone did it then Very Bad Things happen. If the payoff matrix for “everyone defects” is that the universe stops existing, you should probably cooperate.
Edit: NVM, reread the end of the chapter, and it seems like if there’s any way to go more than six hours, period, it’s such a well kept secret that no one thinks its possible. Then again, this would not be the first time Eliezer has employed the “powerful weapon being an amazingly well kept secret” thing, and it was somewhat foreshadowed when Harry mused that maybe scientists had come up with things worse than nuclear weapons.
Either that, or that’s the size of the simulation’s event buffer. ;-)
(That is, it might be a hard limit on the size of time loop the simulation is able to process, if they’re actually in a simulation.)
Assume they are in a simulation—why would it have an event buffer created able to compute time travel at all, and why pick 6 human hours (equivalent) as the magic number constant for it?
Presumably simulating a human brain is harder than simulating the same mass/volume/atom count of solid metal, so as the population increases has the time-turner interval shrunk correspondingly? Seems unlikely it would settle on such a round number if it was changing with population. (Or is that why magic is getting weaker—as the simulation computer fills up?)
It occurs that magic is basically the ability to hack the simulation; the wizards who developed time travel didn’t know what was actually safe, what was unsafe, what would crash the simulation, and what the simulation could actually even do—so they picked the weakest version of time travel to implement (both branches consistent) and slapped a bunch of arbitrary limits on it so it (hopefully) couldn’t break anything major.
Also, Merlin in T.H. White’s The Once and Future King lives his life backwards in time, from old age to youth—is that canon!Merlin, and does that property carry over to the Merlin to whom the characters refer in HP:MOR?
Merlin is not in the canon except as a curse-word of sorts (By Merlin’s beard!).
And as the figure referenced by the Order of Merlin, which is awarded to people who perform exceptional deeds, and as the first person to get his face on a chocolate frog card
Why not? I think it’d be kind of cool to simulate a universe with magic and I’d feel altogether clever if I could implement time travel in it. :)
OK, simulating time travel for the hell of it sounds good, I still question the buffer limit idea:
“Simulated time travel now working, but what should we set the Horological Constant value to?”
“Dunno. Three years? A thousand years? Just enough time to undo saying something rude? MAX_INT seconds? AVAILABLE_MEM? User configurable?”
“Oh whatever, it’s time to go home, I’ll just put six simulated hours and be done with it. Shall I start locking up?”
That would be a disappointing reason for the 6 hour limit, and an unconvincing way to make the universe work so that the plot works. I hope the 6 hour limit is either not real, or something more interesting.
My first hypothesis would be simple processing complexity. Time travel is complicated. It is the kind of problem that grows ridiculously with time and space. The programmer has been able to invent an algorithm that simplifies it for low dimensionality but even with that algorithm higher order time travel would still take too much time on the given hardware.
Second: the programmer initially programmed the buffer in to allow for short term time processing. Things like the soda that prompts you to drink, spell dodging time hop magic, etc. It didn’t even occur to him that the wizards would find a way to exploit the mechanism for long term use.
Another possible reason to have a time-buffer in a world simulator (which, btw, I don’t believe the HP:MORverse is) is that the simulation doesn’t actually do everything in real time.
Rather, you may have situations where process A and process B are defined as taking the same number of simulated time-slices, but process B takes more actual time to simulate for whatever reason, and so the simulation of process A is halted until process B catches up. (This presumes that it’s not possible to reallocate simulated processes across simulating resource threads with arbitrarily fine granularity.)
Which means that at any given real-world moment, some parts of the simulation are at timeslice T, some parts are at timeslice T+1, and so forth. The six-hour limit might simply reflect the typical spread, and simulated time-travel might be a hacking of the system that is bound by that spread, rather than an explicitly simulated capability with an explicitly simulated upper bound.
Something like this is true of the only reality-simulating system we know of, namely our own brains. For example, color phi is a kind of simulated time travel where, in response to a perceived event E1 at time T, your brain constructs an illusory event E2, which you experience as occurring before T. This works because different parts of your brain construct your experience of time T at different rates, and tag those parts as occurring at T; the experience of simultaneity is constructed by your brain.
If the six-hours is to avoid too much time-skew, it’s a hack and one would expect better from simulation-builders.
There are plenty of ways to efficiently calculate differing time-space regions, using lazy evaluation or equivalents thereof. For example, the famous Hashlife algorithm for Conway’s Game of Life does exactly that—different regions can be billions or trillions of generations apart thanks to memoization. Lazy evaluation proper allows weird techniques like the reverse state monad or circular programming (aka time-traveling).
It may be that the limit is not due to the physics itself but because of the intervention of an early wizard. Unbounded time travel is one of the most powerful abilities imaginable. The first witch to exploit this and take ultimate power would obviously want to prevent others from overthrowing her. It would be in her best interest to find a way to put constraints on the powers of others. Longer than six hour anomalies may well trigger destructive countermeasures.
If the simulation is filling up that might make time travel less powerful but I don’t see why the processing/resource constraints should make other forms of magic also need to be restricted.
(fixed simulation resources / increasing population) = less magic per person
(fixed simulation resources for magic / increasing population using magic simultaneously) = less spare magic at any given moment
Were the sort of ideas I was thinking. But, if it’s a simulation it needn’t compute in realtime, so it is a weak suggestion.
A 6 hour simulation buffer would explain a T-6hour limit, but not that you couldn’t go back into the same simulation buffer more than once, or that you couldn’t operate on the 4 disjoint 6-hour segments of the 24 hour limit.
With an un-shelled Time Turner, could Harry go backwards from 23:59 to 17:59, then cover most of the same 6 hour interval again by jumping back from 00:01 the next day to 18:01?
Depending on how the 6 hours in 24 constraint is imposed, (Scotland’s midnight-midnight, noon-noon, whenever the operator’s variable 24-30hour days roll over, 9:00pm-9:00pm, a leaky-bucket token at 15sec/min, or whatever), what happens at 9 hours past lunch could be odd.
If it is a simulation, and time travel devices are limited in ways to save on computation and such, some of these restraints make sense: the quibble over what counts as information is resolved as “anything that will force the simulation to recalculate futures”, the simulation buffer is locked to one per time-turner because allowing an arbitrary number of retries would cause the computation requirements to explode, and Harry can get around the limit by using someone else’s “turn”, even if they can’t use it, because they have information that the simulation won’t allow to travel.
My money is on Dumbledore’s timeturner. McGonagall, Snape, and Amelia Bones won’t suspect it, all having witnessed Dumbledore receive future information (therefore he can’t travel back in time far enough). Harry will capitulate to Dumbledore’s offer of the Timeturner once he determines that a) Dumbledore knows Harry was involved in the Azkaban break, and b) being able to travel the full 6 hours will convince the rest of the wizarding world, including his teachers, that Harry was not involved. Dumbledore will do this because it suits his interests (or sense of drama) to have war declared on Voldemort.
I don’t think Dumbledore would knowingly declare war on Voldemort prematurely. If he doesn’t believe Voldemort is back, he won’t try to convince others that he is.
Dumbledore very nearly took over the wizarding world of Britain last time there was a war, according to the Malfoys. This is a good reason for him to have war declared yet again, even (especially!) in the absence of Voldemort.
Then why wait until he actually has reason to think that Voldemort may be on the brink of returning? Why not simply fabricate evidence?
I’m fairly confident that the Malfoys are wrong in their assessment of him. Not only would it be an arbitrary departure from the original canon, having nothing to do with making certain characters more rational, there are also plenty of ways he could have pursued his supposed ends more effectively if those were his real goals.
I don’t think it would depart from canon, and it would be very much in line with fanon: the fanfiction involving Dumbledore shows him as someone who thinks he knows better—and has no qualms about misleading or mistreating anyone to get them to do as he wishes. Canon never states this outright, but it does give you all the evidence you need to make a decision: Dumbledore, with full knowledge of the situation, condemned Harry to spend nine years of child abuse under the Dursleys.
People like to think of themselves as good. Many ambitious people might use unfortunate circumstances as a reason to get power even as they wouldn’t go out of their way to cause those circumstances to come about.
If the six hour limit is or resembles a natural limit of any kind, which it may, it seems most likely to correspond to one quarter of a day, where “day” might be sidereal, stellar, or solar (probably not civil). Hours are just… very artificial, and while magic seems perfectly happy to abide by artificial rules, this limit is likely to predate accurate timekeeping (and accurate timekeeping precedes the careful pinning down of how long an hour is!)
The “quarter-day” interpretation would have the following implications:
Depending on which sort of day limits time travel, certain astronomical phenomena would mess with time travel.
Six hours is unlikely to be an exact figure, and the figure in question may vary depending on seasonal and geographical context.
Time travel in outer space will behave very strangely.
Maybe the natural limit is some naturally derived constant that happens to be slightly more than six hours, and the time-turner was designed by humans to operate in units of exactly an hour. Which you could test by seeing if it was possible to send information back in time 6 hours and 1 second using two chained time-turners.
This makes for an interesting question: How do you test stuff like this?
It seems dangerous. What exactly breaks when you go back too far? Just the local area? Can I launch a time turner into space with a suitable automatic device and watch from a safe distance? Is having an observer involved relevant (more likely with magic than quantum mechanics)? Would testing with wizard or house elf participants be unethical? Is the anthropic principle relevant?
Yet Dumbledore says that someone erased Atlantis from time, and I’m guessing Atlantis existed for more than six hours. (Also, it was erased from time in such a way that people still know about it).
We know that earlier wizards were stronger, yet the book says “time turners can’t go back more than six hours” multiple times, so it seems an important fact and widely believed by the characters. We know that strong Dumbledore can’t do it, nor can efficient Quirrellmort (or he wouldn’t suggest to Harry the plot with Bulstrode), and that time travel can be blocked long-term by the Wizards who created Azkaban. I think it will be a matter of partial-transfiguration style understanding for Harry to find some kind of loophole.
I think Atlantis serves as a cautionary tale for what happens when you TRY to go back more than six hours.
That’s what you get when you program your universe without checking your array indexes consistently!
Perhaps the six hour limit was placed on time travel a long time ago, by wizards much more powerful than today’s, who knew (perhaps first-hand) how nightmarishly screwy time travel could get. This sort of thing has precedent: the Interdict of Merlin prevents the most powerful magical knowledge from being passed on in writing. The reasoning is similar, too: some magic is just that dangerous.
I would not be surprised if the destruction of Atlantis involved Time Travel. Especially if we consider that this fic might be influenced by “Harry Potter and the Wastelands of Time.”
This is what I figured.
The same thing applies to prohibiting time travel in Azkaban, or allowing one person to tell another person (while giving them access to who knows what subtle face expressions) to talk to a person that the first one can’t communicate with.
Which suggests that to time-travel further than 6 hours back, you’d just need to completely Obliviate yourself, wiping your mind so clean that a Remembrall in your hands would blaze like a miniature sun. Best to also take the form of an infant, since you’ll be a mental one anyway.
I suddenly really hope Harry doesn’t “Where did all you zombies come from” travel back to himself as an infant to destroy You-Know-Who for the second-first-only time as the end of the book, leading to his obliviated-adult-in-the-form-of-a-child brain as the cause of his “childhood” genius.
I’m in an unusual position I find hard to express!
I never considered that possibility until your comment.
The possibility is awesome and if the story had really ended that way I would’ve been totally satisfied, I think.
Now that you’ve pointed it out and I’ve thought about it, I’m greedy and want a different awesome ending, so
Now I agree with you and hope it doesn’t end that way.
As long as the Remembrall blazes in the same way (as far as any person would notice), regardless of what you’ve actually forgotten.