Common logic is how people think and figure things out. It's like problem-solving, but with a lot of practice, it can help us make decisions that are usually correct. Common logic can be thought of like a set of rules or guidelines that we all use to help us decide things, like if something is true or false, or if it is safe to do something or not. We use common logic in everyday life all the time, like when we use our own judgment to decide if something is the best choice or not.