You know that old saying, “Believe only half of what you see and nothing that you hear?” Today thanks to internet rumors, Photoshop, and 3D animation you could probably cut that down to, “Believe… nothing.” John Green of Mental Floss makes a case as to why we should all be a lot more skeptical in this video “49 Hoaxes People Actually Believed.” He covers a lot of hoaxes throughout history ranging from fake radio broadcasts to fake YouTube videos. Fair warning, you’re probably going to be disappointed if you believe in mermaids, fairies, and those giant Middle Eastern camel spiders.