Marriage privatization their partnership; they would have a private marriage ceremony if they so chose in order to honor their private religious or philosophical concept of marriage. In a July 2008 article appearing in "The Monist" titled "Privatizing Marriage" Harvard Law Professor Cass Sunstein and University of Chicago economist Richard H. Thaler offer arguments for the privatization of marriage. Thaler and Sunstein also take up the topic in their co-authored 2008 book "Nudge: Improving Decisions about Wealth, Health, and Happiness." Sunstein and Thaler argue for marriage privatization among other positions under the heading of what they call "Libertarian Paternalism". Opposition to marriage
Nudge (book) they are influenced by their social interactions. The book describes two systems that characterize human thinking, which Sunstein and Thaler refer to as the "Reflective System" and the "Automatic System". These two systems are more thoroughly defined in Daniel Kahneman's book "Thinking, Fast and Slow". The Automatic System is "rapid and is or feels instinctive, and it does not involve what we usually associate with the word "thinking"". Instances of the Automatic System at work include smiling upon seeing a puppy, getting nervous while experiencing air turbulence, and ducking when a ball is thrown at you. The Reflective System is