1. Alibi Suspects

2. Sherlock Holmes “How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?” (Sir Arthur Conan Doyle, The Sign of Four)

3. Use What You Know Crime Scene Microsoft – One of the “suspects” must be “guilty” – Use the knowledge pool to “alibi” out incorrect answers – Whatever is left must be the right answer

4. Sample Exam

5. Recap Use the knowledge pool to eliminate wrong answers The answer that is left is the correct answer no matter how unlikely