The word 'smart' has arguably become the most common word to be associated with intelligience. I mean that's partly why we have the usage of the term 'smart' phones. Thus, this further foregrounds the importance of appearing smart. Futhermore, the nature of interviews seems to have changed so much in the world today that it's not really always the most brilliant person in the room that gets the job. In fact, it has been said that the American Billionaire Jeff Bezos is usually more concerned about how candidates answer behavioural questions, as opposed to how they answer technical questions.