This Lessonette® exercise is one of several addressing the offense of criminal attempt as set forth in the Model Penal Code. In this lesson, students consider broad concepts relating to the law of attempts, such as what mental state, if any, should be required for punishing an incomplete offense (with reference to theories of punishment), how the punishment of an attempt should compare to that for a completed offense, and how certain crimes not so labeled are actually particular kinds of attempt offenses. It then examines the mens rea for an attempted offense, highlighting the distinction between knowledge and purpose, and further distinguishing purpose as to conduct from purpose as to result.