Rate five things you know, from any shelf. Your archetype shows up in about a minute, and gets sharper with every log.

Cyril Northcote Parkinson was a British naval historian and author of some 60 books, the most famous of which was his best-seller Parkinson's Law (1957), in which Parkinson named the satirical Law stating that "work expands so as to fill the time available for its completion" after himself.
British naval historian (1909–1993) · From Wikipedia