Have you ever had anyone talk about how a certain group of people who do X are very bad for doing so, and you engage in activity Y, and in fact Y is very different from X, but you have to understand the context in order to distinguish the two, as they are similar enough, so you have a hard time telling whether X and Y are different. Then, because you are a bit neurotic, you begin to feel incredibly guilty and think, What if I do do X? I'm a horrible person! I must pay penance!