Squeaky floors were the best home security in 17th-century Japan. You’d expect Japanese feudal lords to live in pristine houses with the sturdiest materials – and that is mostly true, save for their squeaky, creaky floors. Nightingale floors were flooring systems that “chirped” when somebody walked on it. They were installed in temples and palaces to alert of intruders. The floors were built in a way that the flooring nails rub against jackets or clamps, causing squeaking noises.
100 Mind-Blowing Pristine Facts
Fish eggs can survive being eaten by a duck. The fish eggs can still hatch after going in one end and coming out the other. Not all fish species can survive such a journey, and even then, not all eggs eaten are pooped out in a pristine condition. Still, it’s a good explanation for how seemingly disconnected pools and lakes can suddenly become teeming with fish!