Remember when sitcoms opened with music? How well do you remember the theme songs when you only get one random line?

Ask yourself why you know the Cheers theme. Not how. Why. You never chose to learn it. You never sat down and studied it. It arrived through a television speaker ...

The brain does not forget a theme song it heard 400 times before the age of 15. That is not nostalgia, but rather a neurological fact. The 1980s sitcom theme was a specific and extraordinarily ...