Shakespeare once wrote in one of his plays: "There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy". These easy words became widely famous centuries ago, but the number of things which are hidden from our common sense is still growing. But the reason why they exist is truly serious - otherwise how shall we destroy all these stereotypes? And here we have around 20 new ideas which have always seemed to be nonsense, but all of a sudden proved to be... real!