[[folder: Fridge Brilliance ]]

* In ''Series/{{Eureka}}'''s "Once in a Lifetime", it seemed like a joke to have Zoey be valedictorian in a future that will never happen. But to be valedictorian, she had to smarter than a school full of geniuses; a subtle way to hint that Zoey is smarter than she gives herself credit for. We later learn this to be true when she scores a 157 on her IQ test, but tells her dad it was 112.
** And how did Zoey end up with a super-genius level IQ with average parents? Well, that sort of thing ''can'' happen, but Jack mentions his IQ score was 111, which he was quite proud of because he didn't know it wasn't out of 100. However, he ''also'' mentions he "wasn't even trying". What sort of person can half-ass his way through a test and earn an average score without paying attention?
*** This right here supports my theory that Jack is actually highly intelligent, it is just his knowledge pool and mind are geared toward investigations.
*** It's all but stated that Jack is actually a lot smarter than just about anyone gives him credit for. He just doesn't grasp a lot of Eureka's science (which would throw a lot of real-world top thinkers into headscracters). Probably because he just isn't that interested in raw science, once it becomes clear it's essential to performing his job, he adapts and learns fairly quickly (witness several "future flashbacks" where Jack is a lot more knowledgeable about what's going on in the town, and several times where he surprises Allison and Henry by grasping advanced science in concept, to respond to their shocked looks with "I learn stuff!") While he never really matches the geniuses in Eureka (as that would undermine the OnlySaneMan humor of the show), that's probably more likely due to him having neither the time nor interest in catching up to all the various sciences that are super-advanced in Eureka, especially when he has Henry and Allison to "dumb it down" for him as needed. So yes, it seems fairly confirmed that Jack is reasonably intelligent, Zoe's mother doesn't seem at all dumb, so it's quite plausible that Zoe has the raw potential to be a genius in her own right, and the environment of Eureka allowed her to explore that side of herself. It could even be argued that Zoe's rebellious streak early in the show was do to her being bored and insufficiently challenged, while lacking the environment of social acceptance of high intelligence, in regular schools.

* When the finale version of Zoe and Jack passed the one in the Pilot, they were in the sheriff's jeep instead of Carter's car, with Zoe not waving at herself as the other one did in the pilot, but with the timeline change, this could have been the way it happened in the changed timeline all along.
* [[spoiler: If Henry and Grace]] were working with Beverly, that would explain why Beverly turned to them to help out with the Matrix incident. [[spoiler: Henry]] didn't know it, but at some point in the past, they'd worked together already.
* You know how [[spoiler:Henry's hatred of Jack for stopping him from using time travel to save Kim]] was apparently forgotten by the writers? In the episode "God is in the Details," Jack and Henry work together to stop the church pianist from using a dangerous device that she thinks will let her see her husband in the afterlife. Afterwards, Henry consoles the pianist, reminding her that their loved ones are in Heaven and they will be reunited with them soon. This is the point where [[spoiler:Henry forgives Jack]].

* Jack Carter is actually highly intelligent, he just does not apply that intelligence to gaining and using scientific knowledge. He instead is more focused on investigative work and problem solving. Notice how the problem of the week goes straight over his head until someone simplifies it for him, then its usually HIM to come up with a method of solving said problem even if he has no idea how to implement it(that is what the more scientific minded characters end up doing). One particular great example of this is the episode where Kevin slips some mental stimulants into Jack's coffee so Jack would not be looked down upon by Allison's brother. The first thing Jack does is read all of said brother's research and ends up coming up with methods that Allison's brother hadn't even considered. This unspoken facet to the character explains the early episode in which S.A.R.A.H. tried holding Jack hostage, claiming that there was enough data to suggest Eureka would fall apart without him(and Henry and a few others but it started with jack), He is smart enough to repeatedly figure out the Problems of the Week before more than a handful of people die, people who are reportedly invaluable to their fields of research.
** Seems to be all but stated in the actual show. One doesn't get to be a US Marshal (one would assume) without some kind of ability to think and reason logically. Jack just ''looks'' dumb because he's literally surrounded by people who are off-the-charts smart, working on tech so advanced the brightest minds of the age in the real world wouldn't know what to make of it. Jack certainly doesn't have the learning and education of Eureka's scientists, but he trumps them all when it comes to on-the-fly problem-solving.

* In The Ex-files each of the ones hallucinating had a specific person and reason for hallucinating due to unresolved issues each had to work through:
** Unlike Jack, Nathan was never shy about confessing his feelings for Allison.
** Tess was there for Allison both when her first husband died and shortly after Nathan died and represented her fear of Jack dying and her heart being broken a third time.
** Jo spent her whole time up to that point romanticizing her relationship with Other Zane and glossing over the negatives.
** Jessica Lansky represented Fargo's insecurities about his being suddenly the boss of GD and his frustration at not being able to stand up to General Mansfield.
** Adam Barlowe represented Trevor's disappointment at the military influence on Eureka and his own homesickness.


[[folder: Fridge Horror ]]

* In the episode "Reprise", one of the songs seen being acted out in the background is Nena's "99 Red Balloons" which is very blatantly about nuclear annihilation. Eureka is a town where citizens can casually own antimatter. So the clean-up that got glossed over at the end of the episode probably involved stopping somebody from nuking Eureka.
* Kim directly addresses the fridge horror inherent to the premise of "Before I Forget", noting that in addition to using the memory wiping device to steal scientific breakthroughs, her husband Jason could also have been using the device to erase her memories of a romance with Henry, cover up if he was caught having an affair, and even erase her memory of leaving him.


[[folder: Fridge Logic ]]

* Taking the HistoricalInJoke to its logical conclusion, if the Einstein-Grant bridge became the Einstein-Rosen bridge after the timeline changed, then that means EVERYTHING prior to the Season 4 premiere occurs in an alternate universe to our own, and it is only now that history is put "right". It may never be significant, but it is an odd thought.
* The Matrix victims can exit the Matrix if they receive an intense electrical shock. Zane uses this to escape the Matrix and to help the rest of the Astraeus crew escape. In the real world, he can eject everyone, except Carter, who is plugged in at a different location. Any one of the escapees after Zane could have shocked Carter out of the Matrix, but instead they leave him to be saved by whoever is there at the Eureka IP address (an unconscious Henry and the duplicitous Beverly). Carter could have "shocked out" with minutes to go, but instead has to be ejected manually in the last few seconds before he dies.
* If [[AlternateSelf Alternate-Timeline Henry]] introduced Grace to [[spoiler:[[NebulousEvilOrganisation The Consortium]]]], why didn't the real Henry discover this when he and Grace shared memories?
* Considering in the new timeline, Kevin no longer has Autism and thus no longer possesses the unique connection to the Artifact that drove ''everything'' in the first two series, you have to wonder... what exactly ''happened'' to the Artifact in the new timeline?! Does it still even exist?!
** Forget the new timeline, what happened to the Artifact ''at all''? [[AbortedArc It's never even mentioned again after season two]], even though they still mention events that happened ''because'' of the Artifact (i.e. Kim's Death).
** From what I recall, it was mentioned once. Somebody mentioned that the Artifact's energies had dispersed and dissipated and that the item itself was in a sense ''dead''.
* When Beverly hijacks Allison's brain, she doesn't bat an eye at repeated mentions from the Founder's Day time travelers that she is becoming Director of Global Dynamics AGAIN, even though in this timeline, Fargo succeeded Stark instead of her.