121 votes
Accepted

Why would vampires be incapable of entering a non-vampire human’s house uninvited?

I think you can approach it from three different avenues, depending on the tone of your setting: Psychological: Perhaps the root cause of vampirism in this world (such as a virus), inflicts an ...
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  • 6,658
89 votes
Accepted

How does vampire-dad keep the masquerade to his daughter

By having him claim a long list of medical conditions Photosensitivity There seems to be a medical condition for everything under the sun. In this case there are a number of medical conditions where ...
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  • 7,268
82 votes

How to politely coexist with a vampire?

A HUG in your life: a guide to workplace harmony Your team is about to welcome a new colleague from the HUG (Haematophagous, Undead and Ghoulish) community. You may be apprehensive about this change ...
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  • 3,144
77 votes
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Could an unusually long lived being continue to learn with the times?

As a Transylvanian native with a strong affinity to dark offices, I believe I can shed some light on your question. Since I'm typing this on a computer, it should be obvious that at least some of us ...
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73 votes

Plausible explanation for lack of reflection in a mirror

Alternative answer to keep the spirit of "mirrors as vampire detectors" for a very futuristic setting: In a high-tech world, mirrors could be obsolete and replaced with smart 3d screens which show a ...
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  • 43.7k
67 votes

What possible scientific reasons could there be for a vampire to only be killable via wooden stake to the heart?

It's due to the nature of vampires, and their regenerative state. If a metal or other non-organic substance is thrust into their body then over time their regenerative abilities will push it out. Even ...
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  • 76.2k
66 votes
Accepted

Why would vampires require human blood?

Immunology: The need for human blood is not, really, about food. It's about antibodies. The vampire's immune systems have come to function in a completely different way from human immune systems. This ...
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  • 56.8k
64 votes

How can changes in personality/values of a person who turned into a vampire be explained?

The mind and body are less separate than most people seem to think. Changes to body chemistry can greatly change how, and even what, we think: Alcohol is well-known for its disinhibiting effects and ...
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63 votes
Accepted

What possible scientific reasons could there be for a vampire to only be killable via wooden stake to the heart?

Now, a few answerers have claimed that the stake need not be wooden. While this may be true in the traditional vampiric lore, we exist only to answer the specific question here. Why Wood Vampire ...
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  • 2,817
63 votes
Accepted

How can my town be public knowledge while still keeping outsiders out?

The answer to this is very simple: make the entire town into a gated community. Encircle the whole place with a fence and have guards on the gates who are or can pass for human. The guards would ask ...
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  • 46k
61 votes

How does an immortal vampire king hide his vampirism and immortality?

The idea of the king is immortal, the appearance of the king is unchanging. Because that's the mythos of the king. Replace the crown with a mask The mask is the king and the king is the mask. The king ...
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  • 114k
59 votes
Accepted

What justification can I give for why my vampires sleep specifically in coffins?

Least Likely to be Broken Into Sure, you can cram yourself into a trunk, or build a huge chest where you could stretch out and sleep comfortably inside... but then what? Your house/castle/lair has a ...
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57 votes
Accepted

How long after death is blood fit for consumption?

For a starting point, consider the meat aisle at the grocery store. In it you'll find roasts, steaks, and other chunks of red meat. This government food-safety site says that such meat can be kept ...
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55 votes

Why would vampires be incapable of entering a non-vampire human’s house uninvited?

In the novel Blindsight by Peter Watts, vampires have a neurological "glitch" that sends them into an epileptic fit whenever they see a right angle. Presumably the wiring of their visual cortex gives ...
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54 votes

How would a young girl/boy (about 14) who never gets old survive in the 16th century?

Find a normal person whom they can trust with their secret and become that person's "apprentice" or "assistant". Using this, their chaperone could get any number of high-paying jobs (doctor, etc.) and ...
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  • 5,550
53 votes

Where could a vampire get blood without harming people?

However, it turns out most of the “blood” in rare meat is myoglobin, and that the blood is drained from the animal at the slaughterhouse before it is butchered and sold. and Blood from ...
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  • 7,461
53 votes
Accepted

Where could a vampire get blood without harming people?

Since you say it doesn't have to be human blood, they would just straight up buy frozen animal blood by the bucket at supermarkets like nobodies business. No need for any fancy subterfuge or ...
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52 votes
Accepted

Could a humanesque creature derive all its nutrients from drinking blood?

The simple answer is yes it's possible, if they have a suitably developed physiology. Vampire bats, leeches, mosquitoes and more are proof of that. There are complications that make it less practical ...
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  • 76.2k
49 votes

Plausible explanation for lack of reflection in a mirror

When your world allows psychic powers (for which you can often find a pseudo-scientific explanation), you could say that vampires are actually completely invisible and their physical appearance is ...
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  • 43.7k
49 votes

Why would vampires be incapable of entering a non-vampire human’s house uninvited?

It's a partially misunderstood half-truth Short Version: Various chemical compounds traditionally used in incense and other religious ceremonies are highly allergenic, even occasionally deadly to ...
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48 votes
Accepted

What would happen if a refrigerated bag of human blood was warmed up in a normal kitchen microwave?

Ask a Blood Banker: If we are to assume that the vampire wants the blood to be in something like the native functional state (otherwise the vampire could simply live off of meat), then this is a ...
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  • 56.8k
46 votes

How does vampire-dad keep the masquerade to his daughter

He works night shifts. Now I know you said he doesn't have to work, but he could choose to work as a way of maintaining the masquerade: Night shift workers generally have nocturnal sleep patterns ...
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  • 14k
45 votes

If vampires existed in modern society, how could they not be well known by science and the public

The problem is with the conception of vampires as these hunky sexy kung-fu doing young folks. Even Dracula had a little bit of this stuff, with the vampire hunters chasing around his carriage and ...
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  • 282k
44 votes
Accepted

Why would vampires sire vampires of lesser blood than they have to?

As Sir Terry Pratchett put it, 'humans raise their successors, vampires raise their competition'. Raising a lot of vampires of high rank increases the chance that they will be able to overthrow you. ...
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  • 40.3k
43 votes

How does an immortal vampire king hide his vampirism and immortality?

Every Decade or So He Poses As His "Son" Every twenty to thirty years an old man "retires" from the public life, passing power to his heard-of, but rarely seen "son". The king does a good enough job ...
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40 votes

Silver needs to make contact with the skin to be effective, but vampires are wearing armor. What now?

What you need are medieval squirt guns Just stir powdered silver into the water first. Or, if you're less for the silly, clouds of powdered silver should do it. If the goal is not really to chop up ...
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  • 9,187
39 votes
Accepted

Would a vampire still be able to be a practicing Muslim?

Allah is Forgiving and Merciful. In the case of eating forbidden food, the Qur'an offers an out for those who really did not want to eat it, but were compelled to by hunger. The Islam stack exchange ...
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  • 130k
39 votes

What justification can I give for why my vampires sleep specifically in coffins?

Assume that your culture has a strong taboo against tampering with corpses, or with closed coffins. One simply does not do that unless one is the undertaker with the explicit go-ahead of the priest. ...
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  • 99.2k
38 votes
Accepted

Why would a language created by humans lack both the /s/ and the /z/ consonants?

TL;DR There do exist human languages, and not even exotic languages spoken by a handful of illiterate people in remote jungles, which do not have /s/ and /z/. It's not something fantastic, and it ...
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  • 75.4k
37 votes

How to design an advanced deadman's switch for the "vitality impaired"?

Measure brain activity. Most variations of vitally impaired citizens which try to maintain at least a minimum of scientific plausibility either have an active brain or something which replaces the ...
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  • 43.7k

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