History Fridge / TheBabySittersClub

* Look at the age gaps between the Thomas siblings. There are two years between Charlie and Sam, and two/three years between Sam and Kristy, but about six years between Kristy and David Michael. Then consider the fact that Patrick walked out on his wife and kids not long after David Michael was born. This suggests one of two scenarios: either David Michael was an 'Ooops' baby and Patrick couldn't deal with the additional responsibility, or the marriage was ''already'' rocky and it was a case of "let's have another baby to save our marriage" that [[SurprisinglyRealisticOutcome didn't work out]] and if anything made things worse. This would also explain Patrick basically refusing to acknowledge David Michael's existence, as either way he might feel resentment towards him for causing the end of/not saving the marriage (as well as potentially guilt in the latter case for choosing to have him when he wasn't ready to deal with another kid).

* In the final scene of ''Mallory and the Ghost Cat'', the family notes that the strange meowing-like noise from their attic seems to have disappeared after they adopted a cat from the shelter. Seems spooky -- except that the family adopted a ''deaf'' cat, and deaf cats tend to be especially vocal (and much louder with those vocalizations) because they can't hear themselves. They're probably just not hearing the noise anymore because their real cat is meowing so much that they don't hear it, or if they do they just assume it's her.

!!FridgeLogic
* Seems to be heavily in use for ''Claudia, Queen of the Seventh Grade''. Claudia is demoted to seventh grade, and her new classmates elect her their queen - seriously, this is an actual titled position, and is apparently a Stoneybrook Middle School tradition. Setting aside the fact that it was [[RetCon never mentioned]] in the earliest books in the series, when the club members were ''all'' in seventh grade, it's hard to understand how the school officials would be okay with giving the title to someone who is repeating the year. Many schools would consider this as unfair to the students who are going through that grade for the first time.
** As a note, Claudia mentions that most of the seventh-grade kids looked up to her in her last book, all copying her style, and her friends campaigned heavily for her to be Queen, so it's understandable why she would win. However, it is still unfair for someone taking seventh grade for the second time to be able to contend for the title in the first place.
** Maybe they didn't think to put a rule in place because it never occurred to them that the situation would come up, and then felt obligated to let Claudia run because there was no rule against it? That at least makes a tiny bit more sense than explicitly allowing it.
* In ''Dawn's Wicked Stepsister'', the first real sign of conflict between Dawn and Mary Anne comes when Dawn puts on a radio while she's doing math homework; this distresses Mary Anne, who prefers to work in silence. Neither is necessarily wrong for having different study habits, but each girl's parent tries to get their daughter to compromise and let the other have her way. One has to wonder why not a single one of the four ever thought to have Dawn use ''headphones''.
* Many Black readers found it unusual and somewhat unrealistic that black Jessi had to wait until she was eleven to finally get her ears pierced ''and'' her parents wouldn't let her until she negotiated with them like Mallory. Even if she didn't get her ears pieced when much younger (including soon after birth), many black people and other [=PoC=] tend to agree more easily with children's ears getting pierced (without much argument) when the child asks to, without considering it exotic or strange (or something to negotiate about). It only makes sense when you realize that the author, who is white and was born in 1955, was from an era where ''white'' American children rarely got their ears pierced before they were adults (and this is a forbidden thing that carries through to today, with many parents forbidding ear piercings for their girls until as late as adulthood.) This is averted in the graphic novels, where Jessi--even if she's not shown with her ears pierced in books--is shown with them in her character portrait.
** It's also possible that Jessi's parents just had a bad experience in their past (like, maybe the mom, or someone one of the parents knew, had pierced ears young and had some kind of complication) leading them to be overprotective despite this being out of the ordinary for their community.

* Look at the age gaps between the Thomas siblings. There are two years between Charlie and Sam, and two/three years between Sam and Kristy, but about six years between Kristy and David Michael. Odds are, David Michael was either an 'Ooops' baby, or a 'let's have another baby to save our marriage' baby. Either way, that was probably the last straw for Patrick - he couldn't take the additional responsibility or was resentful/guilty that the new baby couldn't magically fix the marriage.