According to ancient Greek mythology, Lethe, better known as Oblivion, was a river deity, daughter of Ungratefulness, who flowed in the underworld Hades. People believed that when the dead reached Hades they were forced to drink Lethe’s waters to erase any memory of their previous life. Today, after more than two and half millennia, whether forgetfulness is a blessing or a curse is still discussed as part of a debate on what is broadly known as the right to be forgotten or right to oblivion in the digital world.