The frequency illusion, also called the Baader-Meinhof phenomenon, is a cognitive bias in which someone learns a novel word or concept—and then “suddenly” encounters it everywhere ...

also known as the Baader-Meinhof gang. Largely active in the 1970s and 80s, the RAF was responsible for the deaths of at least 30 people. By 1998, the group had disbanded. However, the trio is ...