From the dust of old centuries until today’s computer-driven and smartphone-glued society, seven has always been considered a magical number. Many believe in the power of seven, be they sorcerers or mathematicians, historians or, in the past decades, even psychologists. Seven days in the week, seven wonders of the world, seven primary colors, seven notes in the musical scale, seven ages of man, Miller’s law on human brain’s capacity of processing information, and the list can go on and on.