I don't have a TV, and I don't follow most news issues carefully unless an election is coming up soon and I need to be informed to vote intelligently. So I sometimes feel a bit left out when people discuss politics, or completely clueless when people talk about TV shows.
(For some things I am glad others keep track.)
But at least I know that a mugger trying to rob David Copperfield should doubt that the magician's pockets are really empty.
Or that a mafia boss using codes should pick one that would take a computer more than a few seconds to decipher.