#Harry Potter world building

[lilbeanz]

Hi! So firstly I want to be a little direct (I hope I'm not being rude 😓) and ask if you're religious and if you practice witchcraft? When I started reading jodt I was pleasantly surprised to see the real life wicca holidays and traditional way of decorating for Yule. You even put in the candle language!!! 🕯️🕯️ (Even if a bit sneaky) It made me, a modern witch, feel seen in a work of fan made, free, easy consuming content. So I wanted to ask if it was a classic writer-researched-a-bit-too-much or you practiced it yourself. Sorry if the question made you uncomfortable .

Secondly I have say you're doing very well with everything and I admire the way you always interact on here and post something almost every day! Just make sure you can rest and have time for your offline life ❤️🔮 Blessed be

Ahhh!!! Merry meet! You are not being rude at all, and tysm for noticing🥺🫶 (it was a bit cheeky of me, wasn't it?😈)

Would I say I'm a witch? ....Sort of? I'd call myself a novice to the craft at best. I'm not explicitly religious, I don’t have an altar or worship any deities.

I dabble! I'm fascinated by witchcraft and wicca, and my family's always been quite witchy at heart.

I've done a couple of spells here and there, nothing huge. Like I said, I dabble... and RESEARCH THE HECK OUT IT🔮✨️

And Joanne really fucked up by having her magic world celebrate Christmas and Easter etc... I get that the Muggle world has blended alot with it when HP takes place -- and it is all from Harry’s pov -- but why would pureblooded witches and wizards celebrate Muggle Christian holidays? Especially families like the Malfoys.

As a witchy person, it just made no sense to me. The eight sabbats predate the christian holidays... Good thing the canon story is all from Harry’s perspective, huh? I saw my opportunity and I took it! 🤣

Also tysm, you're so sweet 🥺💕

Blessed be!🫶

[nizar-dreams]

As amazing as Fantastic Beast is with all of the interesting creatures and additional lore, I loathe the take on the American Magical World. And not because American pride (‘Merica🇺🇸🦅🇺🇸🦅🇺🇸🦅) but because that might work in New York, but that social structure sure as fuck don’t work the farther west you get.

Each state is different, it gives them their charms, and each state also has… drumroll please 🥁🥁🥁🥁

NATIVE AMERICANS!!! Yes the people who’ve been on these lands since before the first of the 13 colonies even existed!!!

Can you imagine Magical America? The creatures who lived alongside tribes? The giant forests? Hell, the other sentient beings like the centaurs, goblins, elves, etc.? Imagine:

The great Rivers and Lakes guarded by the merfolk and swimming with the great salmons, occasionally assisting the tribes along their borders so they all may share what the waters have to offer them

The great Plains and Forests with centaur tribes being mighty and powerful, guardians of the lands and occasionally allying with the human tribes

Elves that are still short but mighty and healthy and who get mistaken for native children when they live alongside human tribes

Goblins living deep in the caves of mountains, living happily with little human interaction besides for trading for safe passages and materials.

Imagine the werewolves loving their inner wolves and having their own tribes and living peacefully in their homes.

Imagine that, for thousands, and hundreds of years they lived in peace, occasionally waring against themselves but things happen of course but they way the magic and earth had never been so healthy as it was. Gods imagine Yellowstone or the Grand Canyon? Or the Mojave Desert? The great basins, the plateaus…

And then, when the Europeans started claiming the land that the magical beings fought to protect the lands they have lived on for centuries, the creatures of the forest hiding the remnants of their great lands from human eyes and hands, protecting the magic that slowly dies as the land gets destroyed and the magical beings who called those lands home started to die and could no longer protect the land.

That they tried to cling and hide and fight for their homes with whatever they could, but when the magical Europeans got involved it just went to hell for the magical beings.

The Native Reservations, National Parks/Lands, and deep into the mountains, are some of the few places that magical creatures can live in relative peace. The centaurs are not as many, and the elves either live on the reservations or the forests. The goblins are not like their European kin, but they are not the same as they were, now instead of trade for safe passage it is trade for protection of human materials or trading for goblin creations. The merfolk have perished in most lakes and rivers where humans have polluted or hunted their food to extinction. The magical creatures who once lived on the land are either hunted down for sport or for being declared born of hell.

Now imagine Ilvermorny, created by a mother who wanted her children to learn magic, and turned into a way for tribes to take shelter and teach their ways as well as learn other ways for magic. The school cropping up in the midst of Magical Americas downfall becomes a place that the few tribes not driven out of their home learn different form of magic while creating a foundation for Native American magic to survive and be taught in the school. Imagine multiple sister schools (because America is too big for there ti be only one school) to the original Ilvermorny being created to teach, to embrace and preserve a culture they refuse to let be erased.

Years later and it is a core course that gets taught, and keeps a part of a culture alive that was on the bring of complete erasure.

Imagine that when African slaves started appearing and become enslave, those who escaped and found themselves at Ilvermorny schools, they started teaching their magics as well. Then as more minorities started to appear in America, so did the lessons in certain Ilvermorny schools where these minorities were prevalent.

America is a cauldron full of magical cultures being mixed, and Ilvermorny is the first to openly teach different magical cultures. The southern schools involve more Mexican, Spaniard, some French, and African magical courses, while the north is more French. The east coast is more influenced by British magics, while the west coast is influenced by the Spaniard, Chinese, and Russian.

They all had their own mix and all have the main course shared by the people who lived their first, but magical america is sooo much more more fascinating and so young still! There is still so much that I can’t possibly cover without a month of research! And we haven’t even reached the southern hemisphere!

Fantastic Beast is great, but it’s missing the uniqueness and complexity of America. And I can only dip a finger into the endless possibilities of the magical American world.

[owlarchimedes]

The more you think about Harry Potter lore the less it all makes sense. They have spells that just just MAKE THINGS become OTHER things, spells that make SOMETHING from NOTHING, etc, so why would they ever need money? Why buy anything when you can just transfigure a rock into a cup? Idk some parts of the world building don't make sense to me.

[local-depressed-ace]

so we all know the judicial system in hp is like high key fucked up (like the lack of rehabilition, stopping major crimes purely through fear, lietrally forcing criminals into depression and insanity, etc) but somehow I've never seen anyone address the dementor's kiss.

like what happens to people after that?? does the ministry kill them? pick them up and drop them off in some wasteland away from civilisation where they wander like mindless zombies until they die from starvation?

we're missing out on some real disturbing world building in fics yall

[batransacon]

Slytherin manor would have these

Great hand forged snake window guards on a home in California

[juiche]

Inspired by Way Down We Go by @xiaq 🪄

Draco and Harry found a way to snuggle together while remaining as clueless, platonic best bros and it's a bit hilarious and very sweet, so I had to draw it :)

[shrimpalbuspotter]

Scorpius is so much like Astoria that it kinda shocks Draco. He sees his wife in him every day, and instead of him slowly becoming more like his father, he just seems to becomes more similar to his mother. Draco gets to see the love of his life everyday, even after her passing, in the thing thats most important to him. Their son.

Because Scorpius is kind in a way that Malfoys aren't used to, soft in a way that the Greengrass lineage can't fathom. He doesnt talk in the way you'd expect a respectable pureblood to. He stuttersz rambles, and stammers, and hesitates. Scorpius doesn't even carry himself in a way you'd expect a respectable pureblood to, because he stumbles, shuffles, and skips, and prances.

Scorpius wouldn't be found sitting in a boring meeting, blathering on about politics. Its unnatural, its not supposed to be. Scorpius can be found sunning in the garden or with his nose deep into a book. He can be found writing owls to his bestfriend and practicing potions in the manors laboratory.

Scorpius is extroverted. He loves talking, he loves learning, he loves making friends. But he's alot to deal with, and he has a bit too much love for most people to handle. Scorpius life is a tragedy disguised as a coming of age romance story, in a way that parallels Astoria too much for Dracos comfort. He worries, that the curse may affect Scorpius. He doesn't want his son to hold any more burdens, doesn't want to even think about the rumors that would come around if he did. Draco worries. And he worries because of how different his son is. He doesn't have that natural Malfoy stubborn and charisma, that would get him out of a tricky situation if he so pleased. Draco doesn't think his son can defend himself and that terrifies him, because he knows Scorpius is being tormented and there is nothing he can do about it.

So he thinks about what Astoria would do. In a perfect world, Astoria would still be here, and she'd sit in the fields with her child, and hold him to her chest, and run her hands through his hair while humming some made up song. And maybe then Scorpius would be happier, because maybe all he needed was his mother's soothing touch. Soothing in a way Malfoys nay Greengrasses are. Soothing in a way Draco doesn't think he can replicate.

But he trys, Merlin he trys. And it won't be as sweet as it would if he was Astoria, but he knows Scorpius doesn't care. He knows his son is happy just being held by his father, getting shapes traced onto his back until he eventually falls asleep. It's kind. It's soft. And isn't it so wonderful how children rub off on you?

[littleliterarylesbian]

I feel like the big "gatcha" of jegulus antis of them having some members of each other's families on their family trees is kind of fucking weird because.... EVERY wizard that's a pureblood or halfblood has in common people on every other family tree in some way shape or form.... wolfstar,,,,, ginny x harry (idk the ship name 😦), drarry, ect. THE WIZARDING WORLD IS FILLED OF INCEST BECAUSE JOANNE WAS FUCKING STUPID WITH HER WORLD BUILDING. EVERY WIZARDING WORLD'S FAMILY TREE, IN THE GRAND SCHEME OF THINGS, IS ALL CONNECTED IN SOME WAY SHAPE OR FORM. I CANNOT STAND SOME OF Y'ALL WHO DON'T USE YOUR BRAIN AND THINK THAT JUST BECAUSE YOU'RE USING THIS TO ARGUE AGAINST A SHIP THAT'S NOT REALLY A BIG DEAL AND DOESN'T MEAN THAT THOSE SAME RULES ALSO DON'T APPLY TO YOU'RE FAV SHIPS 🫵

[danny-phantom-slut]

magic school au

There weren’t a lot of things that could surprise the young halfa. When he was only a few months old, his father accidentally lost him in the Ghost Zone for over twenty-four hours (and they never found out how he managed the momentary rip in dimensions, nor how Danny got back to the Living Realm). He once had a cooler of pure ectoplasm – which was highly acidic – dropped over his head when he was two years old, and he was completely fine afterwards (okay, maybe there were a few ghostly side effects – but that was it!) The Lord of Time – who was a little shit, and an Ancient – was also his self-proclaimed godfather.

So, yeah. Not much could surprise Danny.

Danny had been privy to ghostly shenanigans since he was three years old, when his parents indirectly, kind-of-but-didn’t kill him.

However, he didn’t like to think of that, so he didn’t.

But waking up to something tapping on his window, and opening it, only to be attacked by a screech owl at three in the morning? That caught him off guard, he had to admit. So did the letter that the owl practically chucked at his head, which then promptly right soared through him, because he had turned intangible on instinct.

The owl looked affronted.

He bared his fangs at it and warily picked up the letter.

Might as well see what it was, right? Who knew – maybe one of his friends in the Ghost Zone was trying out a different ghostly theme? It wouldn’t be the first time, and he decided to humour them.

He blinked when he read over the letter.

-

To Mr. Daniel Nightingale Fenton

Third door to the left on the second floor of Fenton Works 13 Phantasm Drive Amity Park, Illinois

-

CASPER SCHOOL OF WITCHCRAFT AND WIZARDY

Dear Mr. Fenton

We are pleased to inform you that you have been accepted at Casper School of Witchcraft and Wizardry. Please find enclosed a list of all necessary books and equipment.

The term begins on September first. We await your owl by no later than July thirty-first.

Yours sincerely,

Asuka Ishiyama

Headmistress

-

Danny blinked again. What.

[iamnmbr3]

Voldemort recruiting werewolves and other nonhumans to his cause: I will give you power in a society that has shunned you and the freedom to live openly.

The Order of the Phoenix recruiting werewolves and other nonhumans to their cause: Thoughts and prayers. We support you.

[icksam]

“Severus snorted when he found out Draco didn't know the word trauma in the medical sense. He informed Draco that these were called panic attacks, common among people who had suffered terrible things, especially at a young age. He said he'd known more than a few people with them, and that Draco shouldn't have been ashamed to ask for help. But Draco was mortally ashamed, all the more so when Severus said those brutally kind words. This was not how he wanted his godfather to think of him.”

- Chapter 4, The Silver Wolf.

This is a little scene from Draco Malfoy and the House of Black, also the third book of a 7 part rewrite series by starbrigid on ao3.

I’m so sick of looking at this unfinished illustration whenever I open procreate, so I very half-hazardly completed it. sorry? better than leaving it to rot without sharing, I guess.

The timelapse claims this piece took me roughly 6 hours, but I actually started this maybe around mid-july this year. and. well. it’s now mid-september. AHHH

[celestialseawitch-ff]

🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹 🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹🌹

“Alright, Mr. Potter?”

“I’m fine, Professor McGonagall. He healed Hermione. She’s going to be okay now. Right?”

The last part was addressed to John. The man looked up from where he was fishing out a cigarette. He nodded as he went to light it. 

“This is a hospital wing,” Professor McGonagall snapped.

John sighed and tucked the cigarette away for later. 

“And just who do you think you are, sir?”

John raised a blond brow at the professor. “John Constantine. And yourself?”

“Professor Minerva McGonagall. I am the Deputy Headmistress of this school. This is our headmaster, Professor Albus Dumbledore.”

John waved at Albus dismissively. “We’ve met. Who’s the Death Eater?” He looked pointedly at the dark wizard from before that now stood behind Albus like an attack dog.

Albus drew his shoulders back. “Professor Snape is not a Death Eater. I’m afraid you're mistaken, John.”

John snorted. “Right, about as good and light of a wizard as you are, I’m sure.”

Albus’ eyes flickered with anger. Considering how well Albus tended to keep his emotions in check, John saw that for the win that it was. He smirked at the old man.

“You’re certainly one to talk, John.”

John shrugged. He wasn’t known to be one of the most powerful sorcerers in the world because he looked pretty.

“Severus says you claim to have been sent here by letter,” the headmaster continued, “but as far as I can recall, you’re still blacklisted from the ICW.”

John snorted. “Yeah, thanks for that by the way. Being wrongfully accused of ritual murder wasn’t on my bucket list but it sure was fun to fight off all those dementors.” His smirk widened. “Tell me, have they replenished their stock yet? I’m itching for a little fun while I’m around.”

Minerva gasped as she moved between Harry and John as if to shield the child with her body. Harry looked unconcerned, his eyes focused on John with curiosity. 

“John,” Albus insisted.

John rolled his eyes. He fished out the letter and handed it to Minerva. “I haven’t broken any rules. And I assume I was asked here only so the ministry wouldn’t break any rules either.”

Minerva eyed him warily as she opened the letter.

“I’m afraid you already have, John,” Albus said. “You did blood magic. That’s highly illegal. And on a minor. It pains me to need to alert the ICW and the British Aurors, but something tells me you won’t go quietly.”

John grinned. He could feel Albus’ growing annoyance with him at his blasé attitude. It had always riled the man up that he couldn’t get into John’s head. John always used it to his advantage. He prided himself on being one of the only bastards out there that could pull one over on Albus Dumbledore.

Minerva took in a sharp breath of air as she pressed a hand to her chest. She looked up from the parchment to John with wide eyes. “You’re Miss Granger’s birth father?”

Harry’s head shot up. The other adults all went still with shock.

John leaned back in his chair and rested his feet up on the end of the bed, ankles crossed. He linked his fingers together as he rested his elbows on the arms of the chairs and grinned up at Albus.

“Guess I didn’t break any laws, Albus. Blood magic is allowed between family relations, most notably in the use of healing spells. Guess you’ll just have to make up false allegations… again.”

Albus took the parchment from Minerva and read it over. The anger rolling off of the old wizard was palpable. John looked across the bed to Harry who was eyeing the headmaster suspiciously. 

“Well,” Albus said at length, “how good that you were finally able to show up for your daughter, John.”

John chuckled noiselessly. “Honestly, I’m a bit offended you haven’t noticed the resemblance – or the attitude.” He smirked. “Or the extra curriculars. Tell me, how is that poltergeist doing?”

Albus blinked widely. “Hermione is the one who got rid of Peeves?”

John shrugged. “Been teaching her everything I know. I’m sure you’ve noticed how locked down her mind is. Like I’d send her anywhere near the likes of you without first making sure her head was a locked vault.” His eyes ticked over to the Death Eater. “Good thing too.”

[nizar-dreams]

UPDATE: If Only You Believe in Miracles So Would I

TWO CHAPTERS IN THREE DAYS BABES IM ON A ROLE!….

…

..

.

Okay just for this week. I might make it my thing and try to post on holidays (aka American Holidays usually) like Thanksgiving and Christmas. Gods know I’m not planning anything big with the latest family drama and cutting the usual Christmas busy drama in over half out.

But that’s personal problems, not story update!

But that is the plan! I’ll try to get our 6th chapter out by thanksgiving and if for some reason that is a no go, well, Christmas time it is! I won’t always be able to spoil everyone with 10+ chapters but I hope the two chapters this week makes up for my absence.

Life’s a bitch, but I’m still standing babes.

So our 4th chapter made me decide to up my rating to a teen and up audience. Decided that general audience may not completely cut it but we ain’t getting deep into too much hard content — yet. That’s for later and we still don’t get deep deep into it. I could always make a “side quest” of scenes with hard conversations but I think we will role with the punches as they come. Maybe the side quest for anything that’d make my rating a mature one, but to be determined.

I’ll add warnings as we go, don’t expect any hard warnings for this “year” just yet.

And in the spirit of Dia De Los Muertos I decided I will in fact put the 5th chapter out as it also happens to fall on a Saturday, and the last day, and All Souls Day.

…

Sometimes I wish I could just take my story and derail and yes it is my story but I’ve also been working on this damned thing for years and only now have had the time to be like “rewrite this and that because what the hell was I ON!?” And actually have plans and plot for this.

But enough of me rambling, another time another day — here’s the 4th and 5th chapter in case anyone hasn’t caught up, and another link to the story if anyone is new and just catching this!

Chapter 1: Because I’ve Only Got Two Hands

Chapter 4: This Town Has Dragged You Down

Chapter 5: Could Life Ever Be Sane Again?

Until next time! Stay safe, take care of yourselves! And hopefully enjoy the story yeah?

[fanfic-lover-girl]

Pureblood Purists Actually Have Valid Concerns

Disclaimers

Before I start my post let me make 2 disclaimers since some people have a tendency to twist words on Tumblr:

Not all blood purists were death eaters. I am not condoning DE terrorism here. I am referring to people who held pureblood beliefs but never fought in a war to oppress people.

Harry Potter is a fictional world. My arguments are not meant to be extended to the real world.

Assumption about Magic

JKR does not specify the origin of magic. Is it like ATLA where it's a spiritual kind of thing and people are blessed by Lady Magic? Or is it a gene thing and wizards are a subspecies of human? For me, I am going to go with magic being a gene thing. If magic was like bending in ATLA then wizards should not be such a tiny minority.

Missed Potential of Umbridge Interrogation Scene

This post was inspired by Book 7, Chapter 13 – The Muggle-born Registration Commission. Specifically, the part where Umbridge is interrogating this poor muggle-borne woman named Mrs Cattermole.

‘Could you please tell us from which witch or wizard you took that wand?’

Umbridge's line of questioning is so ridiculous and JKR missed a golden opportunity to introduce some nuance here. She paints all purebloods who are not blood traitors as evil/bigoted. Just because this is a kid's book it does not mean she has to treat kids like idiots. Instead of painting purebloods as bigoted fools who believe magic can be stolen or sadists making up crack in this sham kangaroo court, she could have used this dialogue to present valid and ignored concerns of purebloods. Instead of crap like this, the Voldemort regime could be jailing purebloods who married muggles or mugglebornes on the count of them diluting their race. Or maybe firing half-bloods and mugglebornes and giving those jobs to purebloods. These actions are still wrong but at least they would be rational and add some depth. And purebloods have serious cause for concern. Let me point out 5.

Concern 1 - Existence of Squibs

In the books, we don't know the blood status of the parents of prominent squibs like Filch. But I bet the likelihood of your kid being a squib increases dramatically if one of the parents is muggleborne.

It makes sense to me that mugglebornes could be descendants of squibs. Making mugglebornes basically muggles who won the genetic lottery. In book 2 I think, Arthur claimed Granger was a historical wizard figure and asked Hermione if she bore a relation to him. She denies this but what if someone in the Granger family was a squib in the past and years later she got lucky?? So basically if you mate with a muggleborne, you are basically reproducing with a muggle. Which in turn increases the chances of a squib kid. Squibs can't function in the magic world properly.

Concern 2 - Wizards are a minority

Wizards are a minority in a muggle majority. It's a fact that minorities are wiped out when they reproduce with the majority.

Hagrid says this in book 2:

“Dirty blood, see. Common blood. It’s mad. Most wizards these days are half-blood anyway. If we hadn’t married Muggles we’d’ve died out.”

If Hagrid is right and most wizards are half-blood, how is this a good thing? Given enough time, if wizards keep diluting their race like this by reproducing with muggles, the wizard minority will slowly be erased which leads to...

Concern 3 - Cultural Erasure

It's more than just blood dilution but loss of tradition. Even if a muggleborne like Hermione integrates into the wizarding world, she will never truly grasp certain customs and traditions that pureblood families like the Weasleys and Malfoys will. For example, I came to the US for college. Even though I have been here for half a decade now, I will never understand what it is like to grow up as a kid in the US. I don't appreciate US holidays like Thanksgiving and Memorial Day. My kid likely will but they will have to learn those customs from an external source or maybe my future husband's family. Someone like Hermione may even see some pureblood/wizarding traditions as archaic and unnecessary. Over time, wizards will lose their culture and practically become muggles with magic. Which is why Hermione being minister of magic sometimes leaves a sour taste in my mouth. There's a reason why only born citizens can become president/prime minister for countries like the US (I would like to believe there is a reason anyway).

Concern 4 - Reproductive Issues?

Also, why did wizards need muggles to survive in the first place? Were the women/men having fertility issues? Was the wizarding population so minuscule that they were inbreeding? Or were they simply just horny for muggles? If small native/African tribes are/were able to survive without reproducing with white invaders or other outsiders why is it different for wizards??

Concern 5 - Lack of New Blood

Still focusing on Hagrid's quote. Let's say every pureblood family started with a muggleborne wizard/witch. Therefore given enough generations, Granger could theoretically become a pureblood name like Malfoy or Weasley. But there's a problem: there aren't enough mugglebornes!

Read Hagrid's quote carefully. He said wizards would have died out if they did not intermarry with muggles. Not that wizards would have died out without mugglebornes adding to the population!

This further adds to my blood dilution argument. Basically, we have a fixed magical gene pool which is being stretched every generation with more and more half-bloods being popped out.

Conclusion

Pureblood purists have rational reasons to favour blood purity and to be frustrated with "blood traitors". As more pureblood families like the Weasleys intermarry with muggles/mugglebornes, there is an ever-smaller marriage pool for purebloods. Throw in cultural dilution too.

If JKR wanted to add depth to the muggleborne discrimination, she should have shown how mugglebornes are critical to the survival of wizarding kind and how much purebloods actually need them. Maybe show them using their muggle knowledge to improve wizarding society while she's at it too? But it's like muggebornes like Lily and Hermione have amnesia and forget all about their muggle background! At least make wizards reap the benefit of magic and technology to balance out the issues of reproducing with mugglebornes and muggles.

I just wish JKR could have given purebloods more of a voice. Not all purebloods are crazy, bloodthirsty DEs or Dumbledore bootlickers. And oftentimes, there are reasons behind discrimination that should be examined and explored, instead of just demonized. Harry Potter is seven books worth of wasted potential. I don't know how anyone can say JKR was excellent at world building when the wizarding world feels so tiny and incomplete.

[thatslytherinqueen]

Mattheo Riddle teddy 🧸 now has hair!!! Just waiting on a certain accessory to arrive to add to him. 💚🐍✨️🖤

[starchaserdreams]

Excerpt from the Sorting Hat Song, Order of the Phoenix

"...These differences caused little strife When first they came to light, For each of the four founders had A House in which they mightTake only those they wanted, so, For instance, Slytherin Took only pure-blood wizards Of great cunning, just like him, And only those of sharpest mind Were taught by Ravenclaw While the bravest and the boldest Went to daring Gryffindor. Good Hufflepuff, she took the rest, And taught them all she knew..."

-

Help me, Tumblr. The sorting hat says that Slytherin took "only pure-blood wizards" and yet the two most famous Slytherins are half-bloods (Voldy and Snape).

Can someone make sense of this for me? Is it because the house would die out otherwise, or because JKR wasn't paying enough attention when she wrote it? Or something else?