History Headscratchers / SteinsGate

* Question: if [[spoiler:Moeka]] had spent enough time around the lab to know them (and, by extension,see that Okabe clearly deeply cares for Mayuri) then why did she [[spoiler:kill her instead of taking her hostage?]] I feel that it would have been a much better plan, considering that once [[spoiler:she's dead]] she couldn't be used for leverage, whereas in a hostage situation she could. It would make Okabe much more cooperative.
** [[spoiler:Moeka]] isn't exactly the most stable person to think for themselves and come up with that instead. FB ordered them to [[spoiler: kill Mayuri and]] take the others captive, so that's what they'll do. Regardless, even if they didn't do that it's pretty clear that [[spoiler: Mayuri will die no matter what, just not by Moeka's hand.]]
* In the movie, Kurisu [[spoiler: goes back in time and kisses Okabe in order to ground him to the timeline]] but if you go by the VN, this wouldn't work, seeing as he was thirteen at the time. The VN states that [[spoiler: Okabe's first kiss was actually Mayuri, in elementary school, presumably years before the events of the movie.]] So, is the movie a completely different canon than the VN?
** Movie's canonicity aside, there's no problem here? [=IIRC=], it was never stated outright that this moment was what Okabe meant by [[spoiler: his first kiss]], only implied. Even if it was, convergent worldlines could come into play here as well; [[spoiler: what would've been Okabe's first kiss through Mayuri originally would instead be through Kurisu. Like Mayuri's death, the cause (or in this case, person) changes but the effect remains the same.]]

** Probably some kind of foreshadowing, but one plausible explanation could be that that's one of the timelines where Okabe fails and is captured by SERN and sent to a point in time he has no way of surviving, leave, or leave any trace in human history, like the begining of the Earth (similar to one of those [[spoiler: Death dreams of Mayuri. After all, it is never mentioned that Reading Steiner makes you immune to the influence of other world lines, rather the opposite, so it is fully possible that Okabe might have had one of those]]
** Light VisualNovel/SteinsGateZero spoilers; [[spoiler:in the anime (and presumably the VN), events take place that imply this is simply more than a dream. That being said, there is a discrepancy in the times given. Here, the time is said to be 70 million years ago, whereas in Zero, it's 18,000 BC]]
* After Okabe and Suzuha [[spoiler:go back in time the second time and save Kirisu, why are they affected differently in the time machine? Suzuha ends up back in her future timeline since with the problem fixed, she never left. But Okabe still had been stabbed and had to go to the hospital after getting back? Why would their time machine even be needed at that point as both would return to their own time just as Suzuha was? Okabe's ability shouldn't affect him physically.]]
** It probably has nothing to do with Reading Steiner. Instead, think of it like sending a D-Mail. [[spoiler:When a D-Mail is sent from Okabe's phone, it appears in someone's inbox but seems to vanish from Okabe's sent folder. But that's not what actually happens. When the worldline changes, Okabe's phone is replaced with a ''different'' phone that never sent the D-Mail in the first place. Since sending a D-Mail changes worldlines, it means that the text message can exist despite never being sent. Okabe and his wound is like a physical D-Mail. It still exists, even though the device that "sent" it (Suzuha and her time machine) never existed in the first place. Suzuha returning Okabe to the present was probably just a precaution to avoid having two Okabe's in the same time.]] [[MindScrew Maybe.]]
* How does [[spoiler:deleting the first D-Mail from SERN's database right before Mayuri is killed]] change anything? The idea is that [[spoiler: SERN noticed the D-Mail and sent agents to capture the Phone Microwave and all the Lab Members except for Mayuri which leads them to be able to control time and create a dystopia]]. When they [[spoiler:delete the D-Mail]], it had already been sent and had [[spoiler: been in SERN's server since it was sent]]. No D-Mail is sent or time leap done, so the past shouldn't be changed, right?
** Long explanation incoming: Deleting the [[spoiler:first D-Mail from SERN's database]] causes a change in the world line because it represents a unique Major Divergence Point. Just like the Collapse of the Soviet Union and the Y2k event, [[spoiler:SERN's acquisition of the Time Leap Machine in Akihabara]] is a huge cosmic world event capable of shifting the entire world line from Alpha to Beta, instead of making minute changes within the same world line.

[[spoiler:It is implied that although the D-mail is in SERN's server, it is the Rounders' intel itself (That Okabe knows SERN's secrets, their completion of the Time Leap Machine, and their decision to go public with it) that triggers the raid that ultimately lands SERN the Akihabara time machine.]]

While the use of D-mails is able to push away the date and the circumstances by which [[spoiler:SERN receives the Akihabara Time Leap Machine]], so long as Okabe is in the ALPHA world line [[spoiler:SERN will always have a dystopic rule over the distant future, and Mayuri will always die in the very near future regardless of the cause due to convergence.]]

On 08/17/2010 in the DP 0.523307 timeline, Okarin and Daru use [[spoiler:the IBN 5100 to delete SERN's present (not past) Echelon data of the first D-Mail, severing the reason for SERN to investigate them. Furthermore, at this point, Moeka is not interested in finding the IBN 5100 due to the D-Mail from FB's phone and is therefore uninterested in Okarin. Since Okarin will never complete the Time Leap Machine, and SERN no longer has any record of there being any time machine anomalies from them in the Echelon, SERN will never acquire the Time Leap Machine and the Major Divergence Point event is averted. Had they not deleted the Echelon data that day, what's still important about this date 08/17/2010 in the DP 0.523307 timeline is that even though there is no Rounders raid in the immediate future, Mayuri was still scheduled to die in the ALPHA world line on that day, which is why it was Okabe's deadline.]]

[[spoiler:However, because the SERN dystopic future is averted, Okabe returns to the BETA worldline where he is no longer under the threat of Mayushi dying due to convergence, and where instead of a SERN dystopian future lies a WWIII future. In this Beta timeline, the first D-mail was recorded in the SERN Echelon database, Kurisu is stabbed in the radio tower, Moeka receives a D-mail cancelling her search of the IBN 5100, Okabe finds the IBN 5100 at the Shrine, using the IBN 5100 Daru and Okarin delete the data of the first D-mail, Okarin gets rid of the Phone Microwave D-Mail machine and IBN 5100, and finally gets a call from a BETA timeline future Suzuha asking him to save the BETA timeline Kurisu.]]
* [[spoiler: That's not really how the Beta worldline works. In the Beta worldline, no D-Mails are ever received or recorded by anyone. The only one sent in the continuity of the beta line flips causality to the alpha line.]]
[[spoiler:Finally the STEINS;GATE timeline required Kurisu to only appear to be stabbed in order to preserve the events that lead up to the ALPHA timeline, to avoid a time paradox.]]
** Alternatively, it is possible that SERN [[spoiler: has itself been formed as a result of time travel/leaping. As in, after the Rounders obtain Okarin's time-travel machine, they develop it to the point where the Council of 300 go back in time to the year 2000--one of the divergence points--to found SERN and start their own time travel experimentation.]] This would explain why time travel was such an odd fixation of SERN from the start. HOWEVER, if SERN never [[spoiler: obtains Okarin's time machine, this unravels. They don't get the time machine, so no one goes back in time, so SERN is never evil--hence why in the Stein's Gate world, Mr. Braun is living a happy life alongside Kiryuu Moeka. Neither seem to be so much as looking for IBM computers. Rounders no longer exist, because SERN never received the time-leap impetus. Think of that phone call as similar to Okabe seeing Kurisu dead. Initially, perhaps SERN just had the Echelon network. They saw the e-mail and got the time-machine, went back, and made SERN evil from the start. But if Daru deletes the e-mail, then the cause and effect falls apart and everything reverts to the original worldline. The reason that D-mail changed the world in the first place is because SERN saw it. If they don't see it, the world goes back to normal.]]
** I think how it works is that [[spoiler:once SERN detected the D-Mail, that set them on the path to stealing Okabe's time travel technology and becoming a tyrannical superpower, and that led to Suzuha going back in time to stop them and accidentally crashing into the radio building, which prevented Kurisu from meeting up with her father, causing a major worldline shift. By deleting the D-Mail from SERN's servers before anyone at SERN actually noticed it, that whole chain of events is averted.]]
* Seeing this is a TimeTravel story, MindScrew like this is to be expected. [[spoiler:In the final episode what happened after The Other Okabe sent the D-Mail to Daru (as shown in episode 1) when Our Okabe faked the death of Kurisu? Our Okabe told The Other Okabe to live out the most important 3 weeks of his life without altering the past. However, how could the other Okabe accomplish that when he would have sent the D-Mail and cross the 1% Divergence to the Beta world line.]]
** It works like this: [[spoiler:Okabe initially sets events in motion by seeing Kurisu's body and sending a D-Mail that she was killed, which jumps him into the Beta world line. After he manages to return to the Alpha world line, he can't directly save Kurisu because it would create a paradox. If he never saw Kurisu's body, he would never shift to the Beta world line and therefore never obtain the motivation he needed to save Kurisu in the first place. After future Okabe sends the D-mail, he most likely shifts to the Steins Gate world line's future.]]

*** In the [[VisualNovel/SteinsGateZero sequel]] [[spoiler: this becomes a major plot point in some routes. It's set in the Beta world line and when Russia starts experimenting with significantly altering history a number of people are aware of the changes, although not to the same extent as Okabe. It's publicly explained as a new form of encephalitis.]]
** Or only the people who used the D-mail can activate the Reading Steiner for that world line. In fact, [[spoiler: Rumiho and Moeka]] sent their own D-mail to their past self. This theory seems plausible for the former, but ambiguous for the later.

** In the anime-only 25th episode, Okabe says that Reading Steiner isn't a power because everybody has it, his is just more sensitive, possibly due to the illness mentioned above. [[spoiler: Ruka, Kurisu, Feyris, and even Mayuri]] all showed indications that they remembered the other world lines, whether it was from dreams or Okabe's encouragement. Though, Daru is the one character who doesn't remember anything.
** Yes, but Daru [[spoiler: doesn't really have anything eventful happen to him during this time, so the memories just wouldn't be as vivid]].
* [[spoiler: How did Rumiho and Ruka remember vividly the events of the original timeline when Okabe brought it up to them? Mayuri was only able to connect the pieces from different timelines as dreams. While Kurisu was unable to make any connection at all.]] This seems to have the signs of a PlotHole, not a particularly bad or blatant one though and it plays rather nicely to the plot. It was never thoroughly explained more than little fragments from different timelines are stored deep in someone's heart.

** Kurisu, of all people, explained how this could happen in a world where the many-worlds theory stands (even though she kind of made it up on the spot so that Okabe [[spoiler: wouldn't be so sad about killing her.]])

** It seems likely that Reading Steiner is less of a binary have/don't have ability than a sense that can be stronger or weaker depending on the person. If that's the case, people with exceptionally strong RS (like Okabe) can remember across worldlines without prompting, people with moderate RS (like [[spoiler: Faris and Luka]] in this example) would be able to remember vividly with sufficient prompting, and people with weaker RS (like [[spoiler: Mayuri]]) would have a hard time remembering previous worldlines.

** The Butterfly Effect, as explained over the course of the series. D-mail after D-mail affect the divergence number, which in turn alter the timelines. [[spoiler: And yes Future Okabe did meet with past Kurisu.]]

* If Kurisu [[spoiler:had a paper on a feasible time machine]] at the beginning of the series, why does she present such an air of total disbelief in time travel at the same point in the story?

** [[spoiler: It seems to have something to do with John Titor. In the original timeline, John Titor was a popular phenomenon in 2000 which must have inspired people like Okabe and Kurisu. In the other timeline, John Titor didn't exist until 2010 so it's safe to assume that the idea of time travel wasn't on Kurisu's mind. Keep in mind that Nabakichi didn't show up here either.]]

** [[spoiler:Dr Nabakichi's speech was based off Titor/Suzuha's forum posts in 2001. Kirisu read over the speech and spotted the (intentional) errors Suzuha made in her forum posts and fixed them up, which is what made her believe time travel was possible. However, Okabe's first D-Mail changed Titor/Suzuha's arrival to 2010. Since the Worldlines theory didn't yet exist, Nabakichi would have plagiarized his theory from someone else, likely from one of the eleven theories Kirisu disproves at the beginning of the visual novel. Kirisu would have no reason to believe time travel was possible, causing her to freak out.]]
* Why did [[spoiler:the 0 before the decimal point on the Divergence Meter go out in the Faris ending, where Okabe saves both Mayuri and Faris' father?]]

** They don't. In the Beta World Line [[spoiler:Russia sets in motions the events for World War III]] and in the Alpha World Line [[spoiler:Kurisu never loses her research to her father and Russia doesn't obtain that information. Instead, SERN finds the secret to time travel.]]

** I wonder why they did elaborate that in the manga, as it is already explained nicely by the show/VN: Kurisu's father never showed up on the conference due to it being canceled by the satelite crash, thus there were no possibility for the events [[spoiler:Kurisu meeting/getting stabbed by her father or that he would be there to snatch the papers]] to happen in the first place. This also explains why Kurisu is alive in the Alpha world line but not in the Beta [[spoiler:as she is destined to die that day in Keikan building]].

** D-mails can be ignored and have no effect, as [[spoiler:Moeka]] demonstrated. Besides... really, what effect, however small, was "Okarin is hentai" supposed to have, anyway?

* Regarding [[spoiler:Ruka's]] ending in the VN, and why events don't happen as in other routes: [[spoiler: Why wasn't Mayuri killed by the Rounders in the Ruka ending? In that same vein, why was the lab not raided, and why wasn't Okabe picked up by SERN like the other timelines? I can understand them finally having no reason to kill Mayuri, but earlier in the route I believe Daru reported she had been killed. Perhaps they could've ransacked the lab at a later date, but why don't they apprehend Okabe? The last CG reveals he's been with Ruka for at least 9 months, and I'm pretty sure they're still in the Alpha timeline.]]

** He needed to get an IBN 5100, which were probably easier to get in 1975 than the 2000's. Other than that, his stops were for emotional reasons, [[spoiler: except for his final stop in 2010]].
** [[spoiler:He shouldn't need an IBN 5100 in the BETA Worldline. There's no need to hack into SERN.]]
*** In Steins;Gate 0 it's explained that [[spoiler:she went to 1975 to get the IBN 5100 and the late 90's to use it to stop the Y2K crash. Her time travel prevents the crash in both the Alpha and Beta attractor fields.]]
** According to Okabe, John Titor needed an IBN to restore technology that was lost in World War III. [[spoiler: I didn't get very far in the VN so I don't know how that would help.]]

* How did Okabe's first text about Kurisu change the world line? And even if it did, how did she live in the other world line? Did she even [[spoiler: die in the original timeline, or was it always fake]]?
** [[spoiler: Perhaps a StableTimeLoop ? Okabe's D-Mail triggered the events of the series, which ends with him saving Kurisu, thus she was alive after he sent it]]
** SERN's monitoring program caught the text, which set off [[ItsALongStory a whole big chain of events that negate the chain of causality when Kurisu dies.]] And yes, she [[spoiler: dies in the original timeline]]; the divergence number of the original worldline is different from the Steins Gate worldline. The entire point of Operation Skuld was to establish an alternate link in the chain that leads to the discovery of time travel by Okabe Rintarou — that discovery hinges upon Okabe sending that first text, which requires that the "him" of that day see what he saw.
*** It's not 100% that [[spoiler: Makise actually died in the original timeline]], as the scream Okabe hears in the beginning of the anime and the VN is [[spoiler: his own]].
*** The fact that the divergence numbers between both resulting timelines end up being different should be indication enough, but the attractor fields would also be working against Kurisu's fate as well. That's why it was important that Okabe had [[spoiler: TrickedOutTime when saving her, since he couldn't change what he had observed originally.]]
* How are Okabe and Suzuha able to [[spoiler:go back to July 28th a second time?]] Has the world line changed somehow? [[spoiler:Why doesn't he bump into the Okabe who went back the first time?]]
** My guess is that they went to a world line with a slightly different divergence number than the first time. [[spoiler:Okabe only required the ''memory'' of the failed attempt to think up Operation Skuld without causing a paradox (Dead Kurisu and fake dead Kurisu both lead to the creation of the time travel needed to execute it), not its actual occurrence. The return trip very likely wiped out the original attempt.]]

* In world line 0.409420α, Faris's father [[spoiler:sold the IBN 5100 to cover Faris's ransom]]. Seeing as it was faked [[spoiler:by present-time Faris in order to keep her father off the plane]], who actually received the money?
** Presumably nobody received the money. After Faris's father [[spoiler:sold the IBN 5100]], he found out that [[spoiler: the kidnapping was a fake]] and so obviously didn't have to [[spoiler:pay ransom]]. Presumably whoever bought it wouldn't want to sell it back, so Faris's father kept the proceeds from the sale.
* In the first episode when Makise gets killed, was it [[spoiler: the world line where the future Okabe kills her, the world line where the future Okabe fakes her death and saves her, or its own world line where Nakabachi is the one who kills her himself? ]]
** They are all slightly different timelines all part of the greater BETA timeline where [[spoiler:Kurisu dies and WWIII is started]]. The only exception is the time where [[spoiler:future Okabe fakes Kurisu's death and saves her, as well as averts WWIII. This is the timeline known as STEINS;GATE.]] This was necessary to do as well to avoid a Time Paradox, which Okabe and Suzuha where in danger of committing.
*** [[spoiler:But we hear the thump from the time machine in the first episode.]]
*** [[spoiler:That's the thump from the timeline when Okabe is the one to kill Kurisu.]]

* In episode 14 Suzuha [[spoiler:shows Makise and Okabe the divergence tracker, and it shows 0.337187.]] In episode 15, she does the same, and [[spoiler:it's the same divergence number, implying that it's the same world line.]] How did the world line not change if Okabe already time leapt, not to mention twice?
** Time leaps don't alter the World Lines. it's probably best to imagine the World Lines as having both a vertical and horizontal dimension: D-mails allow Okabe to jump horizontally from World Line to World Line, which in turn [[spoiler:alters the divergence number]]. Time leaps, on the other hand, allow the more traditional back-in-time travel, but can't alter the World Lines. Why that is... maybe because [[spoiler:the 48 hours limit doesn't allow changes large enough to alter the Lines]]. Just a guess, though.

** Reading Steiner, perhaps? It's revealed (in the VN at least) that everyone has this ability to some degree [[spoiler: (e.g. Mayuri being able to remember her various deaths, female Ruka remembering she was originally a guy, Faris remembering the contents of her D-mail, Kurisu replying that her name isn't Christina nor is she Okabe's assistant in the True Ending etc.)]], Okabe's is just much stronger. Perhaps Suzuha remembered her memories from that timeline and chose to take on Daru's name.

* In the Steins; Gate timeline/world, what was the nature of Moeka and Okabe's relationship? In the True Ending, Okabe states that during the month he was in the hospital he was able to discern the "nature of their relationship in this world" (or something like that) but the game doesn't seem to elaborate very much aside from the fact that he helped Moeka find an IBN 5100. Why would she still need an IBN 5100? Was she still a member of the Rounders [[spoiler: along with Tennouji]] in the Steins; Gate timeline? Do the Rounders even exist in the SG timeline?
** Presumably the Rounders still exist, since it's FB's mass-recruitment message that prevents her first suicide attempt in the anime. SERN is probably still hoarding up the IBN 5100s to secure their standalone database. While it doesn't have any [[spoiler:legitimate time-travel related messages stored on it anymore, it's still probably hooked up to the world's most elaborate surveillance system]]. Okabe probably helped her find an IBN so she would delete his photo, then made her a member of the lab.
* How canon is the movie? One thing I didn't get is [[spoiler:how come Kurisu's attempt at the time leap machine didn't trigger Echelon, therefore alerting SERN the existence of time travel?]] I feel like I forgot an important thing.
** IINM, [[spoiler:SERN figured out the existence of time travel from Okabe's first D-Mail, i.e. they found a message in the mail server that predicted the future. The time leap machine doesn't appear to leave a data trail they can follow.]]
** Presumably, the way [[spoiler:Echelon spots time travel attempts is it keeps a database of all cell phone texts in the world and looks for a received text without a matching sent text (because the sent text came from another timeline). Time leaps aren't texts so aren't caught.]]
*** You can say that it didn't catch it, but it would potentially [[spoiler:leave a trail in the form of an incoming call without a caller]].
* In the anime, there are two or three instance where Kirisu makes mention of the [[spoiler:gelatinized corpses]] outside of world lines she could have possibly learned of them. I understand that [[spoiler:everyone has some level of Reading Steiner, but when Kirisu was shown to experience it she was shocked at her own blurted words.]] These all seem to happen in timelines where they don't have the IBN, though she knowingly only obtained the information because of the IBN to begin with, and Okabe was being secretive of his experiences. Did no one realize she was referencing data she couldn't have seen?

* It's a fairly consistent fact throughout the series that [[spoiler:one's death is set in stone, and seemingly the only way to avert the designed day someone dies is via Major Divergence Point.]] With that in mind, [[spoiler:how is Faris's dad's death undone without anything of the sort]]?

** Only seen the anime thus far and currently going through the visual novel, but IIRC [[spoiler:one's death being set in stone seems to only apply as far as consciousness travel is concerned. Both D-Mail and the time machine show that death can be reversed without severe consequences beyond SERN's dystopia in the former case, yet every time Okabe personally travels back mentally he is consistently unable to prevent Mayuri's death. This makes sense since all three methods of time-travel appear to abide by their own set of rules.]]

* Why didn't Okabe just [[spoiler:use the Time Leap machine to Time Leap backwards and make the Time Leap machine again earlier? Surely he could just keep doing this forever instead of having the 48-hour limit?]] It seems like this would've been a fairly simple solution to the problem of only having a limited timeframe to work within.
** If I'm remembering it right, [[spoiler:the Time Leap machine is more Kirisu's work than Okabe and without her expertise as a neuroscientist he can't add the memory transfer function to the microwave on his own. Plus, if Okabe tries to MentalTimeTravel further into the past than that, he risks precluding the circumstances that led to the add-on's creation in the first place.]]
* In the chapter ''"Metaphysics Necrosis"'' of the visual novel, an observant player will notice that John Titor's text to Okabe on the current Divergence measurement is missing after sending back the D-Mail which [[spoiler: stops Suzuha from leaving.]] The headscratcher is this: what is the significance of this text disappearing? It was sent before the D-Mail arrives chronologically speaking, so cause and effect isn't the answer here. Yet the chapter ''"Made in Complex"'' where that D-Mail is undone brings the text back, suggesting that D-Mail somehow did have an impact on it. So what happened in the 0.337187% Alpha worldline to merit this change?

* So wait... in Faris' ending, divergence changes and goes beyond 0% (admittedly backwards), thus [[spoiler:SERN's dystopian future ceases to be at the cost of Okabe losing any history he had with his friends, the time machine never being made and ending up as Faris' "amnesiac" boyfriend. Except Suzuha still travelled back from the future, suggesting that a bad future still awaits. We know this because the Divergence Meter she leaves behind after travelling to 1975 is present in Braun's home.]] How is this possible? [[spoiler: The main creator/contributor of Suzuha's time machine in the future besides Makise (whose fate is left unknown in this timeline) is Daru, who in this timeline has no reason (except, perhaps his time travel board he trawls in the Alpha timeline which may still be the case here) to pursue that creation. There's not even a lab anymore to accidentally stumble upon time travel in some experiment so it's less likely, yet he had to have played some role in its eventual creation since Suzuha is his daughter. And that's not even getting into ''why'' Daru or Suzuha want to travel back to (potentially) 2010 and 1975 in this timeline...]] The whole "convergence will cause it to happen no matter what" is certainly an easy answer to this but a rather cheap one considering the extreme odds against it, not to mention that unlike most other convergences this one isn't explained.
** Apart from convergence, Reading Steiner suggests that [[spoiler: Kurisu, Daru and Mayuri may start associating with Okabe at some point in the future]]. In all likelihood, they end up inventing the time machine at a point after [[spoiler: SERN has ceased to be a threat.]]
** Another possibility: Okabe's memories in this timeline allow him to plot against SERN much more secretly and effectively; he knows that [[spoiler: D-Mails will trigger Echelon]] and therefore is in a much better position to hide from them. He eventually reassembles the team and they send Suzuha back in time to dismantle SERN in 1975, much like [[spoiler: what happens in the Steins;Gate timeline.]] After all, [[spoiler: Hashida Suzu still has to return to 1975 to save Mr. Braun and leave the meter behind.]]
* Ok so I don't actually know if the green gloop-covered skeleton was ever actually, y'know, explained. What the heck was that all about? Was it a reference to the Shibuya earthquake from VisualNovel/ChaosHead? [[spoiler: Nishijo describes the feeling of the earthquake as his body feeling like it's "boiling and melting".]]
** That was the result of the time travel experiments SERN was doing. It's the result of physically traveling through time without working out an actual time machine [[spoiler:like Daru did]]. It has nothing to do with Chaos;Head.
* What was up with the scene when Okabe was in a city full of no people after he used the phone to travel in time? After he sent the message in episode one time reversed and he was stuck in a world with no people, apart from Mayuri. I'm convinced that this is a Anime/ChaosHead reference in which the main character was in the exact same situation: being in a town with no people for a few seconds apart from one other person, and then suddenly the world returns to normal. Was Okabe having [[spoiler: a delusion at that point due to the time travel? Was Mayuri making him see that? IS SHE A GIGALOMANIAC!?]]
** The immediate area around Okabe is empty because in that timeline, it was cordoned off by authorities after the Radio Kaikan building had been "struck" by [[spoiler: Suzuha's time machine.]]
* Could it be possible that Okabe's "Reading Steiner" is a Chaos;Head-styled delusion, while the rest of the time travel aspects are real? This WOULD explain why only he seems to remember the events of time travel. Plus, diverging timelines are a thing in the Chaos;Head timeline.

** The immediate area around Okabe is empty because it was cordoned off by authorities after the Radio Kaikan building had been "struck" by [[spoiler: Suzuha's time machine.]]

** The immediate area around Okabe is empty because it was cordoned off by authorities after the Radio Kaikan building had been "struck" by [[spoilers: Suzuha's time machine.]]

* What was up with the scene when Okabe is in a town full of no people whenever he used the phone to travel in time? After he sent the message in episode one time reversed and he was stuck in a world with no people, apart from Mayuri. I'm convinced that this is a Anime/ChaosHead reference in which the main character was in the exact same situation: being in a town with no people for a few seconds apart from one other person, and then suddenly the world returns to normal. Was Okabe having [[spoiler: a delusion at that point due to the time travel? Was Mayuri making him see that? IS SHE A GIGALOMANIAC!?]]

* What was up with the scene when Okabe is in a town full of no people whenever he used the phone to travel in time? After he sent the message in episode one time reversed and he was stuck in a world with no people, apart from Mayuri. I'm convinced that this is a Anime/ChaosHead reference in which the main character was in the exact same situation: being in a town with no people for a few seconds apart from one other person, and then suddenly the world returns to normal. Was Okabe having [[spoiler: a delusion at that point due to the time travel? Was Mayuri making him see that? IS SHE A GIGALOMANIAC?]]

* What was up with the scene when Okabe is in a town full of no people whenever he used the phone to travel in time? After he sent the message in episode one time reversed and he was stuck in a world with no people, apart from Mayuri. I'm convinced that this is a Anime/ChaosHead reference in which the main character was in the exact same situation: being in a town with no people for a few seconds apart from one other person, and then suddenly the world returns to normal. Was Okabe having [[spoiler: a delusion at that point due to the time travel? Was Mayuri making him see that?]]

* What was up with the scene when Okabe is in a town full of no people whenever he used the phone to travel in time? After he sent the message in episode one time reversed and he was stuck in a world with no people, apart from Mayuri. I'm convinced that this is a Anime/ChaosHead reference in which the main character was in the exact same situation; being in a town with no people for a few seconds apart from one other person, and then suddenly the world returns to normal. Was Okabe having [[spoiler: a delusion at that point due to the time travel?]]

* Ok so I don't actually know if the green gloop-covered skeleton was ever actually, y'know, explained. What the heck was that all about? Was it a reference to the Shibuya earthquake from VisualNovel/ChaosHead?

** I wonder why they did elaborate that in the manga, as it is already explained nicely by the show/VN: Kurisu's father never showed up on the conference due to it being canceled by the satelite crash, thus there were no possibility for the events [[spoiler:That Kurisu meets/gets stabbed by her father or that he would be there to snatch the papers]] to happen in the first place. this also explains why Kurisu is alive in the Alpha world line but not in the Beta [[spoiler:She is destined to die that day in Keikan building]].
* How come the worldline didn't change on the second d-mail (Daru: Okarin is hentai)? Granted, it's completely stupid in content and was designed to be ignored after viewing, but it should still have a tiny effect because having seen a stupid mail <> having not seen a stupid mail.
** D-mails can be ignored and have no effect, as [[spoiler:Moeka]] demonstrated. Besides...really, what effect, however small, was "Okarin is hentai" supposed to have, anyway?

* Regarding [[spoiler:Ruka's]] ending in the VN, and why events don't happen as in other routes: [[spoiler: Why wasn't Mayuri killed by the Rounders in the Ruka ending? In that same vein, why was the lab not raided, and why wasn't Okabe picked up by SERN like the other timelines? I can understand them finally having no reason to kill Mayuri, but earlier in the route I believe Daru reported she had been killed. Perhaps they could've ransacked the lab at a later date, but why don't the apprehend Okabe? The last cg reveals he's been with Ruka for at least 9 months, and I'm pretty sure they're still in the alpha timeline.]]
** Mayuri's death is fixed, her method of death is not. While her initial death is at the hands of the rounders, she dies a number of different ways, and the rounders aren't responsible for all of them. As for him not being picked up by SERN, how are we sure he's not? Even a terrorist/imprisoned scientist can have moments of peace, and I thought the CG looked like it was supposed to be a few years in the future, not just 9 months. It is the alpha timeline, they just selectively show us a happier part of it.

*** In Steins;Gate 0 it's explained that [[spoiler:she went to 1975 to get the IBN 5100 and the late 90's to use it to stop the Y2K crash. Her time travel prevents the crash in both the alpha and beta attractor fields.]]

** They don't. In the Beta World Line [[spoiler:Russia sets in motions the events for World War III]] and in the Alpha World Line [[spoiler:Kuriso never loses her research to her father and Russia doesn't obtain that information. Instead, SERN finds the secret to time travel.]]

*** The implication is that when he was sick in 2000, it was actually reading steiner. Suzuha prevented the y2k crash in the alpha and beta worldlines, so it's implied that he got sick from the worldline being changed when someone (not explained who but either Sern or Suzuha) prevented the y2k crash causing the worldline to shift to the beta attractor field. He was sick for a few days from it just because it was such a large divergence shift.

** When I first saw Moeka "making photos to have proofs about what happened to her" I thought she has such ability too

** It's rather vaguely implied that others might possess Reading Steiner, but would be dismissed as crazy, especially if you believe the WMG that Okabe is a paranoid scizophrenic. Plus, they don't have D-mail or Time Leap to take advantage of, so anything they say would most likely be taken as insane babbling.

*** In the [[SteinsGateZero sequel]] [[spoiler: this becomes a major plot point in some routes. It's set in the Beta world line and when Russia starts experimenting with significantly altering history a number of people are aware of the changes, although not to the same extent as Okabe. It's publicly explained as a new form of encephalitis.]]

*** In the [[SteinsgateZero sequel]] [[spoiler: this becomes a major plot point in some routes. It's set in the Beta world line and when Russia starts experimenting with significantly altering history a number of people are aware of the changes, although not to the same extent as Okabe. It's publicly explained as a new form of encephalitis.]]

*** It's quite possible that the record of the d-mail itself is the only thing anchoring it into history, considering it comes from another wordline. Requires some assumptions about the system of time travel, but it'd explain how deleting something in all likelihood already read would erase it's undue effect on the timeline.

While the use of D-mails is able to push away the date and the circumstances by which [[spoiler:SERN recieves the Akihabara Time Leap Machine]], so long as Okabe is in the ALPHA world line [[spoiler:SERN will always have a dystopic rule over the distant future, and Mayuri will always die in the very near future regardless of the cause due to convergence.]]

On 08/17/2010 in the DP 0.523307 timeline, Okarin and Daru use [[spoiler:the IBN 5100 to delete SERN's present (not past) Echelon data of the first D-Mail, severing the reason for SERN to investigate them. Furthermore, at this point, Moeka is not interested in finding the IBN 5100 due to the D-Mail from FB's phone and is therefore uninterested in Okarin. Since Okarin will never complete the Time Leap Machine, and SERN no longer has any record of there being any time machine anomalies from them in the Echelon, SERN will never acquire the Time Leap Machine and the Major Divergence Point event is averted. Had they not deleted the Echelon data that day, What's still important about this date 08/17/2010 in the DP 0.523307 timeline is that even though there is no rounders raid in the immediate future, Mayuri was still scheduled to die in the ALPHA world line on that day, which is why it was Okabe's deadline.]]

* [[spoiler: That's not really how the beta worldline works. In the beta worldline, no d-mails are ever received or recorded by anyone. The only one sent in the continuity of the beta line flips causality to the alpha line.]]

** Alternatively, it is possible that SERN [[spoiler: has itself been formed as a result of time travel/leaping. As in, after the rounders obtain Okarin's time-travel machine, they develop it to the point where the Council of 300 go back in time to the year 2000--one of the divergence points--to found SERN and start their own time travel experimentation.]] This would explain why time travel was such an odd fixation of SERN from the start. HOWEVER, if SERN never [[spoiler: obtains Okarin's time machine, this unravels. They don't get the time machine, so no one goes back in time, so SERN is never evil--hence why in the Stein's Gate world, Mr. Braun is living a happy life alongside Hiryuu Moeka. Neither seem to be so much as looking for IBM computers. Rounders no longer exist, because SERN never received the time-leap impetus.Think of that phone call as similar to Okabe seeing Kurisu dead. Initially, perhaps SERN just had the Echelon network. They saw the e-mail and got the time-machine, went back, and made SERN evil from the start. But if Daru deletes the e-mail, then the cause and effect falls apart and everything reverts to the original worldline. The reason that D-mail changed the world in the first place is because SERN saw it. If they don't see it, the world goes back to normal.]]

* Seeing this is a TimeTravel story, MindScrew like this is to be expected. [[spoiler: In the final episode what happened after The Other Okabe sent the D-Mail to Daru (as shown in episode 1) when Our Okabe faked the death of Kurisu? Our Okabe told The Other Okabe to live out the most important 3 weeks of his life without altering the past. However, how could the other Okabe accomplish that when he would have sent the D-Mail and cross the 1% Divergence to the Beta world line.]]
** It works like this: [[spoiler:Okabe initially sets events in motion by seeing Kurisu's body and sending a D-mail that she was killed, which jumps him into the Beta world line. After he manages to return to the Alpha world line, he can't directly save Kurisu because it would create a paradox. If he never saw Kurisu's body, he would never shift to the Beta world line and therefore never obtain the motivation he needed to save Kurisu in the first place. After future Okabe sends the D-mail, he most likely shifts to the Steins Gate world line's future.]]

** Light VisualNovel/SteinsGateZero spoilers; [[spoiler:in the anime (and presumably the VN), events take place that imply this is simply more than a dream.]]

*** Light VisualNovel/SteinsGateZero spoilers; [[spoiler:in the anime (and presumably the VN), events take place that imply this is simply more than a dream.]]

*** Light VisualNovel/SteinsGateZero spoilers; [[in the anime (and presumably the VN), events take place that imply this is simply more than a dream.]]