During the presidential campaign Donald Trump’s son, Eric Trump, tweeted a picture of a bowl of Skittles candies along with the caption: “If I had a bowl of skittles and I told you just three would kill you. Would you take handful? That’s our Syrian refugee problem.”
Trump’s tweet generated backlash from many corners but the general logic of this vivid metaphor continues to resonate for many, despite research that demonstrates that the risk of an American dying in a terrorist attack carried out by refugees and immigrants in the United States is astonishingly low. For many Americans, the prospect of just one bad skittle overwhelms a more rational calculation embracing both immigration’s costs and benefits.
But perhaps a different vivid mental picture can help people see the immigration question in a new light.
The trolley problem is a famous thought experiment in ethics. The general form of the problem (quoted here from Wikipedia) is this:
There is a runaway trolley barreling down the railway tracks. Ahead, on the tracks, there are five people tied up and unable to move. The trolley is headed straight for them. You are standing some distance off in the train yard, next to a lever. If you pull this lever, the trolley will switch to a different set of tracks. However, you notice that there is one person on the sidetrack. You have two options:
- Do nothing, and the trolley kills the five people on the main track.
- Pull the lever, diverting the trolley onto the sidetrack where it will kill one person.
This is a tough scenario for sure. Do you believe that pulling the lever is the best option? What is your justification for that choice?
Surveys have shown that around 90% would make the difficult decision to pull the lever to save the five people. The justification for most people is straightforward: saving five lives is better than saving one life. But studies also show that it matters a great deal who that one person is. For example, if the person happens to be the respondent’s relative or loved one, a respondent is far less likely to indicate he or she would pull the lever.