[[folder: Fridge Brilliance ]]

* In the first season episode "Inner Child", Peter brings the bald child the Roadblock action figure from G.I. Joe. "Funny, I remember his scar being on the other side." [[spoiler:In the alternate universe where Peter grew up, it probably was.]]
* The entire episode of "Brown Betty" in ''{{Series/Fringe}}''. At first glance, this episode may appear to be funny and a bit out there (which makes sense seeing as the majority of the episode is a story that Walter is telling Ella while he is high). But if you penetrate the subtext his bizarre story is actually very close to home.
** What subtext? By the end, the subtext ''IS'' the text.
* There's a brief moment in the Season 2 finale when we get a look at some of the comic books that are popular in the Alternate Universe, and we see that Denny O'Neill's ''"GreenLantern and GreenArrow"'' is called "'''''Red''''' ''Lantern and'' '''''Red''''' ''Arrow''" in this world. At first glance, the color swap appears to be a one-off joke. In RealLife, though, comic book writer Martin Nodell got the idea for GreenLantern after he went to a train station and saw an engineer [[LineOfSightName using a green lantern and a red lantern to signal to trains when to run and when to stop]]. [[TruthInTelevision So there was, in fact, a pretty good chance that the famous superhero could have ended up being called "Red Lantern" in our world too]].
** Of course it could also be suggestive of the darker world that is the alternate universe. A Red Ring's power is fuelled by rage rather than willpower and essentially makes the wearer a lethal warrior. Significantly, the rage must be rage motivated by personal loss, an allusion to the more dangerous world that the universe is.
* This troper isn't finished with season 3 yet, but the fact that [[spoiler: Peter appears to Olivia while she believes she's Fauxlivia. At first this Troper thought it didn't make much sense, and it implied Olivia needed Peter to save her--but it actually works. Fauxlivia would only consider seeing Olivia a sign of raging insanity because Olivia was her enemy. Peter is more neutral and thus a far more credible source of information.]]
* In season 3, [[spoiler: Olivia's only ally in her quest to return home is Henry, a ''cab driver''. So he's really just doing his job.]]
** After finding out that Nina Sharp and William Bell had a "complicated" relationship and after seeing Nina [[spoiler: kiss Broyles in the Season 2 premier, the argument Nina and Broyles have in "The Road Not Taken" comes across as less of a accusation of terrorism and more of a lover's spat.]]
** Fauxlivia's ruthlessness can be explained by the nature of her job. She was remarkably undisturbed in "Over There" when she and thousands of others (including her friends) were almost sealed in amber. Her job demands that some lives (including her own) must be sacrificed for the greater good. [[CrapsackWorld She does this sort of thing every day.]]
** Ella's strange lack of discomfort with the (fictional) murder of her mother and overall bizarreness of the world of Walter's story in "Brown Betty" is actually suggestive of the fact that one day, she'll make [[spoiler: a great Fringe Division agent, much as we see in "The Day We Died."]]
** The changes to the timeline [[spoiler: because of Peter's RetGone]] are made of this. There's a list on the WMG page with space reserved for speculation.
*** An example of this: without Peter, the cortexiphan trials collapsed inconclusively, leaving most unaffected and others in a Season-1-Cortexiphan-Child state. Why did they collapse? Because Olivia ran away. Why did she run instead of get help from Walter? Peter never convinced her to.
***** Walter also lost Peter at relatively the same time. "Subject 13" happened at roughly the same time Peter crossed over. During the episode, he's still dealing with the changes from crossing universes. If Peter died at Reiden Lake when Peter and Walter crossed over, then Subject 13 never happens because Walter is recovering from losing not one, but ''two'' Peters.
* The Season 4 episode, "And Those We've Left Behind." I recall that Raymond was taking some sort of medication, but Kate, his wife, would have to remind him to take it, as he supposedly forgot every time. He would apparantly forget the reminders too. But of course he would be unable to reminder these reminders, for he never recieved them, and wouldn't for at least a few years... For each time we see Kate reminding Raymond to take his medication, she was actually talking to Raymond's future self. Raymond was intercepting his own reminders!
* That the Observers were all white men always bothered this troper a bit, but she wrote it off because they also never struck her as quite human. When their greater nature is revealed in Letters of Transit, this troper wondered if maybe this lack of diversity should not have been a handwave, but a subtle clue. That there were so many allusions to Casablanca and the Nazis in the episode confirmed this in her mind, and now the Observers always seem downright Aryan to her.
* One thing I realized about the alt-verse some time ago: Their Statue of Liberty is brown-gold, that, like the Red Lantern exampe above, could be easily mistaken as just a one-off quirkiness. But then again, our own Miss Liberty was that same color in its early days, only acquiring its verdigris crust over time. So, it's easy to assume that, since the alt-verse's technology is higher in a bunch of aspects, they had at the time some way to keep the statue's original coloring, or at least recover it at some point.
** This editor saw it as suggesting their Statue of Liberty is [[ReplacementGoldfish new]], having been replaced after 9/11 saw it destroyed, taking the plane intended for the World Trade Center either [[SmashTheSymbol intentionally]] or [[Film/{{United 93}} unintentionally.]] The latter more likely, since the plane that crashed in a field in our world made it all the way to the White House over there.
*** I thought it was because they have better technology and were thus able to prevent it from developing in the first place.
* "Be a better man than your father" was foreshadowing the events of season 5, episode 4, [[spoiler:where Peter has to choose between trying to save his daughter and trying to save the world.]]
* Upon entering in Bell's safeplace, Walter stumbles upon a vinyl disc that Bell stole from him; said disc is Music/DavidBowie's ''Music/TheManWhoSoldTheWorld''. The lyrics for the TitleTrack of that particular album ([[MindScrew in one interpretation]]) talk about two men in a journey of self-discovery and what they found there, a perfect epitome of Bell's and Walter's friendship.
* The reason the Observers seemed relatively benevolent and allowed September to help out at first was that if the universe was destroyed, they'd be doomed too.
* Obviously detonating antimatter in the shipping lane wouldn't shut down their operation, because even if the opening in the future got blown to bits, as soon as it was fixed they could continue sending materials to that exact same point in time in the past.
* Remember that mystery guy on the zeppelin from Olivia's subconscious, and how Olivia said at the end of the episode ""...But, I think he's the man who's gonna kill me." Well, [[spoiler: the [[http://images1.wikia.nocookie.net/__cb20120519163740/fringe/images/3/33/Fringe_lsd_manx.jpg image on his shirt]] is the same image that appears on [[http://media.tumblr.com/tumblr_m7e8zgudeC1r1qut1.jpg William Bell's nanites]] at the end of season 4, and Bell was indirectly responsible for killing Olivia then.]]
* At the end of Season 2, one of the first concrete details we get about American society in the AlternateUniverse is that Dr. Martin Luther King, Jr. is depicted on the $20 bill. It seems like a logical choice, since he's a revered historical figure in our world as well, but it's also significant that he's replacing UsefulNotes/AndrewJackson, of all people. In the last few decades, there's been some controversy about the appropriateness of putting Jackson on official American currency because of his role in passing the Indian Removal Act, which resulted in the deaths of thousands of Native Americans. Replacing ''his'' image with that of the most famous Civil Rights activist in American history is a convenient way to show that Fauxlivia and company live in a more progressive society than we do.


[[folder: Fridge Horror ]]

* If you think the people of Edina are deformed now, wait until after a couple of generations of inbreeding...
* What have the observers done to humanity if things like Joy, Individuality, Imagination and Free Will are fringe sciences.
* Blue!Nina lost her arm trying to stop Walter from crossing universes and William Bell made her the replacement. She was "a mess" afterwards according to Sam. Learning to use that arm properly may have taken years. [[spoiler: Alternate Nina]] was crazy enough to agree to cutting off her own hand.
* [[spoiler: The Observers are from the future. An evolution of humanity. So where are all the women?]]
** The most recent episode suggests that [[spoiler: Observers are artificially grown and created]]. This might not only imply that they are a single-sex species now but it might even indicate that they are sexless.
* Upon analyzing a few elements of the story, the Observers' origins and powers, and September's explanation to Peter, this troper has reached a terrifying, but enlightening conclusion: The Observers are [[spoiler: the ultimate Bigger Bad of the story in more ways than one. If one analyzes the Vaccum DoomsdayDevice, they will see that the glyphs on it match some of the Observers' language symbols, and its design seems exactly the same as many of their tools. While it's stated that Walter created the machine and sent it back in time, he had no way of creating it with modern technology, even if he is a genius, as there's no technology in either universe that could cause the destruction the machine does, but the Observers have that technology, as well as the technology to travel back in time. They are the real creators of the machine. But that's just the tip of the iceberg, read below.]]
*** [[spoiler: I also became quite suspicious of the Observers' BlueAndOrangeMorality regarding watching but not changing the past and the future, but seeming determined to ensure Peter stops the war between the universers, only to erase him from existence later. When September said that the Observers are "one of the many possible futures of mankind", I had the ultimate, horrifying realization: the Observers are a temporal paradox. [[TimeyWimeyBall By creating the means to travel back in time, they became an unstable anomaly in the time line, as they exist, but at the same time may not exist due to destiny not being written in stone. Their efforts are not just to understand humanity's history, but shape it in order to ensure that their future is the only possible one]](If there's no such thing as destiny, then basically ANY SMALL THING could erase their future, which is why they got so tense when July saved a random girl). When September stopped Walternate from healing Peter, he created a series of events that would cause the destruction of both universes, destroying the Observers' existence completely. As [[IncrediblyLamePun observed]] with Walter saving Peter and September saving them and later Peter's erasing from existence, [[ButterflyOfDoom any small change creates a new set of events, however odd and seemingly unrelated to that particular change]]. But they also wanted to make sure than when they colonized the Blue Universe, the Red Universe wouldn't be able to help, [[XanatosSpeedChess so they erased Peter from story to create yet another series of events that would lead the shutting down of the Machine and closing the bridge between universes, as well as permanently stopping William Bell and ZFT from trying to create a new universe in which the Observers couldn't possibly exist]]. This is also why the Commander in the finale doesn't want Windmark trying to go back in time to erase the Fringe Team: If they did that, all their XanatosGambit would be nullified, and they would risk William Bell trying to destroy the universes again or creating another timeline where they once again aren't sure to exist. It's also possible that Walter and Massive Dynamic's scientific experiments were the prelude to the creation of the Observers. It's all WildMassGuessing of my part, but it also fills in most of the plot holes and unanswered questions. The whole story was the Observers trying to create a StableTimeLoop to preserve their existence.]]
* [[spoiler: The Observers may have never invaded their own universe in season 5. It's possible that they were created in the Red Universe, consider: In season 3's The Plateau scientists create a drug that allows vast intellect that eventually erodes emotion altogether and the Observers, while spending a decent amount of time in the Redverse, don't interfere there nearly as much as they do in the Blueverse - they don't want to mess with the events that will lead to them being created in the Redverse. at the end of season 5 Walter and Michael may very well be going to the future of the Redverse, not the Blue one. The Redverses future may have a different but similar version of the drug we see in The Plateau. ]]
* Edwin sacrifices his life to help the Fringe team to defeat the Observers so that his son River will have the possibility of a better world, right? Except that the plan all along was to stop the Observer invasion in the first place, preventing that timeline from ever coming into being. Edwin only really manages to prevent his son from ever existing.
* When you think about what the people on board the container ships have signed up for ([[spoiler:they have mutated into new creatures to populate the new world]]) it really is quite horrible. [[spoiler:There is no indication that there is any animal life being created other than them for this new world, and so for them to survive as species, they will all need to have their own place on the new food chain. When they signed up, did they know that a lot of them will be eaten by other members of this cult?]]


[[folder: Fridge Tear Jerker ]]

* At the end of "Making Angels" we meet [[spoiler: Astrid's dad]] - an older man, overweight, unsteady on his feet, and with likely heart and diabetes issues. It's very likely that the two universes are going to match a bit more, very soon.


[[folder: Fridge Logic ]]

* Episode 2 has a woman given a muscle paralyser before she died, which somehow halts the neural transmission in her eye so that Fringe can recreate the image of the last thing she saw. Excluding the fact that neurotransmission does not work that way, skeletal muscles have ''nicotinic'' receptors and the receptors in the retina are ''glutamate'' receptors.
* A Mad Scientist Of The Week put himself in a wheelchair by draining too much of his own spinal fluid, apparently to a point where his spinal cord began to die. But the fluid in question is properly called ''cerebro''spinal fluid, and it circulates freely between the spinal and cranial cavities: losing enough of it to damage the spinal cord should've damaged his ''brain'' as well, rendering him incapable of the work he did with Walter in the episode. Furthermore, when Walter extracts more fluid from the man, it ''does'' damage his brain... but many hours after his previous extraction, by which time his supply should've replenished itself naturally.
* I haven't finished the series yet, so maybe this is answered, but I can't help think that there's a couple of really big problems with the whole "Time Traveling Invaders from the Future" thing in season 5. Among other things...How it is possible for them to lose, when they know what will happen in advance, so it shouldn't be difficult to stop the rebels from ever gaining any ground because they should already know who the rebels are and what they plan to do, then go back and stop them before they do it. There's also the inherent problem with going back 600 years and wiping out massive chunks of your own ancestors to claim the world for your own. What exactly keeps you from not wiping your own future/present out in the process? Because I can only imagine how much you've changed the future by killing 50-90% of your ancestors.
** Given how it works out ([[spoiler:a ResetButton ending]]), it's seems there's something like the [[spoiler:Paradox Machine in Series/DoctorWho]] at work. We only catch [[CrypticBackgroundReference glimpses]] of their future and how it works, especially regarding their actual plans for the invasion, but them having that sort of technology makes sense given how even detonating anti-matter in the time tunnel couldn't shut down their operations.
** September actually said that they are from one future, one of the timelines branching off from now. The one they come from and the one they create by invading the past are probably not the same but existing parallel, so they don't know what will happen in this one.
*** [[spoiler: Like this troper explained at FridgeHorror, the Observers are a temporal anomaly, as they created the means to travel through time, but time isn't written in stone, which means it can change and erase their existence depending on the sequence of events. The Observers are not only trying to understand and study human history, but gently directing it to their path. [[ButterflyOFDoom They don't want to risk changing things, which is why they don't like when one of them changes anything, as it can lead to a completely different future]]. Their focus on the Fringe team is due to September's interference with Peter Bishop, which leads to the war between universes and William Bell's plans to try and destroy both universes. They can travel backwards and have psychic powers that allow them to predict certain events, but it doesn't not make them TheOmniscient. They're basically trying to create a StableTimeLoop that ensures their victory and survival, at the expense of mankind.]]
* The Observer's plans in season 4 don't make too much sense. Because they polluted and ruined the planet of their future timeline beyond repair, they went and colonized the past timeline before the environmental destruction occurred. However, they haven't stopped using the same methods to turn the past timeline into a replica of the previous one they inhabited in 2609, which was precisely the reason they invaded the past in the first place. That alone suggests a crippling lack of foresight, since it is only a matter of time before they eventually destroy the environment of the timeline in 2015 like what was done to their previous future. And this coming from beings who are supposed to be genetically engineered into super intelligence.