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In my last post, I pointed to a blog by psychologist Paul Bloom in which he tried to make a psychologically supported case for indulging the simple pleasures of life more, and retraining less (an obviously version of his argument). And yet, I (and a few of the commentors) felt a little underwhelmed by his argument, even though we liked the general project. Before going onto my own response to his argument, I want to lay out a quick hypothetical, and get your thoughts.

Recent evidence on car purchasing from Haper’s Index shows the interesting fact that 1/3rd of all individuals who own a full hybrid Toyota Prius also own a gas guzzling SUV. Tyler Cowen calls this portfolio theory. Ryan Sager calls it moral self-regulation.

So here is the hypothetical. You have a friend at work who drives a Prius. Over the course of the year, you two have become quite close friends and you are especially drawn to his/her ecological responsibility.

One Saturday night, he invites you and your boy/girlfriend over for dinner. When you arrive at his house, you see parked next to his mini-Prius a 10 mpg Hummer H2. You are shocked that your ‘green auto’ friend also owns one of the least fuel-efficient cars on the market.

Over the course of drinks, he mentions one of four explanations for the combo of vehicles in his garage:

  1. “It is my spouse’s car, and I really don’t like how s/he owns it.”
  2. “We used to have 2 SUV’s, but are making an effort to be more green and replaced our other SUV last year. Our carbon footprint dropped so much!”
  3. “We really like both cars… so different, but they fit such different aspects of our personalities”
  4. “I am really into off-road riding and the Hummer is great for getting around in the trecherous driving up in the mountains.”

My question is, which of these things is most likely to quell your astonishment at this purchase? Would you, or would you not pass judgment regardless of their explanation? Is there something else s/he could say besides these? Does s/he need to say anything?