2 Vikings used ravens to navigate. They knew that ravens were seeking their pray on land instead of water, so they used that as a tracking device for land.
3 People with obsessive compulsive behavior show a low cognitive inhibition value in tests.
4 An ancient Egypt cure for blindness was made of honey with mashed pig eyes. Everything was poured into the patient’s ear.
5 In Medieval England there was something called ordeal by water. If you were convicted, you were thrown into water; if you floated, you were guilty of the crime you were accused of.
6 The left side/right side dominance of the brain (and different types of thinking linked to them) is actually a myth. It is one of the most popular psychology myths in the world along with the myth that we only use 10% of our brain. If you don’t believe me, read this and this.
7 There is a big common misconception that you have to wait 24 hours before declaring a missing person. This was made popular by movies but it’s not true in all cases. If there is evidence of abuse or there is something unusual about the fact that the person is missing, the police should be noticed.