"Hic sunt dracones" was written in the Hunt-Lenox Globe in 1503. It was a way of saying that we don't know an area of the map and it may be dangerous. Brian Dunning made a video about critical thinking and called it "Here Be Dragons". In ancient times there were legends about dragons and other creatures to explain the unknown. Now we give new names to the supernatural: reiki, homeopathy, ghosts, conspiracy theories...
Here you have a press kit about this video: Press Kit
What do you think about this topic and the video? Should we watch it in class?
Another article about this problem: Supersticiones, pseudociencias y placebos: ¿cómo saber qué es verdad y qué es mentira?
