Proof by Contradiction HL
"...when you have eliminated the impossible, whatever remains, however improbable, must be the truth?" Sherlock Holmes in The Sign of the Four by Sir Arthur Conan Doyle. Holmes was a wonderful detective and he would also have been excellent at carrying out proofs by contradiction, as this is exactly the process we use. To complete a proof by contradiction, we start by assuming the opposite is true. If we show that...