A though experiments is a technique used to explore a hypothesis, theory or principle by thinking through what its consequences would be. These experiments are not actually performed and are often impossible to set up. The intent is not to prove something, but rather to explore difficult questions through speculation and logical thinking. Hopefully, the results of this thinking will lead us down interesting paths we might otherwise miss. Some examples are: "What will happen if this event occurs?", "If B happened instead of A, how might things differ?", "If something happens in the future, what might cause it?".