Actor Matt Damon got into a tense exchange with a journalist from the libertarian Reason TV site after she asked him whether teachers with tenure would lack incentive to work hard at their jobs.

The journalist argued that Damon has an incentive to work hard as an actor because he lacks job security, while teachers do not.

"You think job insecurity makes me work hard?" the actor asked in disbelief. "A teacher wants to teach. Why else would you take a sh*tty salary and really long hours and do that job unless you really love to do it?"