Small talk is merely a verification of current emotional state. It's not to be necessarily informative, or even correct. Small talk is basically a way people verify that they fit-in with each other, ie,. they share the same opinions on things, and feel the same way about politics, entertainment, hobbies, etc. As such agreement is more important than the factual content of the conversation (gossip, soap operas, pop stars).
Most conversations among people are retelling of the same old things over and over again, with relatively exaggerated expressions of emotions, and a little cursing in between. agreement keeps a conversation going, and opinions are to be expressed, but not attempt to influence or change the person spoke to.