Are all these people deaf?
For example, there's the unwritten law of TV shows that states two or more people can discuss illegal activities, quite loudly, while in public and surrounded by strangers, and no one will hear them. If you keep an eye out for it, you'll notice it all the time. Criminals will meet in restaurants and chat about their plans to murder someone as if they're talking about the weather. Detectives will discuss top secret cases while walking along bustling city streets. What's even stranger than discussing these things so loudly and within earshot of everyone else is the idea that they found it necessary to come to a public place to discuss it in the first place. Of course, sometimes a show must do that in order to create a sense of atmosphere, and that's fine, it is just TV after all. Still, I find it amusing to imagine real criminals behaving this way. It would certainly make for easier arrests.