Epistemological psychology
The term episteme is related to the Greek word επιστήμη, which translates literally as "standing near or by that which causes" but is often simplified as "knowledge" or "science". By ignoring ego interests the core impetus or the essence of a deed, real or imagined, is recovered.
Gimmick
The origin of the term, "gimmick", is uncertain. Etymologists suggest that the term emerged in the United States in the early twentieth century. The "Oxford Dictionary" suggests that it may have originally been a slang term for something that a con artist or magician manipulated to make appearances different from reality and gradually changed its meaning to refer to any ‘piece of magicians' apparatus’. The word itself may be an approximate anagram of the word magic. Another possible origin is that it may have come into use among the gaming tables, where it came to refer to "a device used for making a fair game crooked". The term first appeared in American newspapers in the 1910s and 1920s.