Hypothesis: fairy tales originally come from accounts of vampires.
Assuming that fairy-tale nobility are Twivamps explains so much. They can "live happily ever after" because they're genuinely deathless; they're supernaturally beautiful; the beautiful peasant-girl that the noble prince falls in love with is turned, the magically healing kiss is actually a bite (or maybe just a kiss -- vampires have venom instead of saliva, right?); they fall in love at first sight and stay that way forever.
Prince Charming is a vampire.
In the vein of the Harry Potter and the Methods of Rationality discussion threads this is the place to discuss anything relating to Alicorn's Twilight fanfic Luminosity. The fanfic is also archived on Alicorn's own website <strike>(warning: white text on black background)</strike>.
Previous discussion is hidden so deeply within the first Methods of Rationality thread that it's difficult to find even if you already know it exists.
Similar to how Eliezer's fanfic popularizes material from his sequences Alicorn is using the insights from her Luminosity sequence.
Spoilers for the fanfic itself as well as the original novels need and should not be hidden, but spoiler protection still applies for any other works of fiction, except for Harry Potter and the Methods of Rationality chapters more than a week old so we can freely discuss similarities and differences.
EDIT: Post-ginormous-spoiler discussion should go to the second thread. (If you have any doubt on whether you have reached the spoiler in question you have not.)