Excessively large choice sets can make it hard to predict where people will go for fun activities. To solve this, researchers used a method that limits choices based on what's suitable for the activity and how far off the path it is. They found that sampling a smaller set of options based on these limits gives more accurate predictions than just picking suitable locations. By testing different ways of limiting choices and sampling options, they discovered that a simple method works best for predicting where people will go for fun.