Pros and cons lists are a basic technique for weighing the pros and disadvantages of a choice or action. They're handy for gathering various arguments and points of view. This method can help you identify knowledge gaps and places where you may need to conduct further study. A pros and disadvantages list is a basic yet effective decision-making tool for understanding all sides of a debate. Arguments in support of a certain choice or action are presented as pros. Cons are counter-arguments.