Fact Snacks!


Curiosity is fueled by what you already know. Studies show you’re more likely to be curious of the things you know a little about than you are of something you either know nothing about, or think you know a lot about.
Medieval castle stairs were often built to ascend in narrow, clockwise spirals so right-handed castle defenders could use their swords more easily. This design put those on the way up at a disadvantage (unless they were left-handed). The steps were also uneven to give defenders the advantage of anticipating each step’s size while attackers tripped over them.