If you've forgotten the capital city of Chile; the basics of osmosis; how to solve a quadratic equation; the names of the Bennet sisters in "Pride and Prejudice"; who wrote the famous poem about daffodils; the use of a conjunction or the number of continents in the world, "I Used to Know That" will provide all the answers. A light-hearted and informative reminder of all the things that we learnt in school but have since become relegated to the backs of our minds, "I Used to Know That" features hundreds of important snippets of wisdom, facts, theories, equations, phrases, rules and sayings.