The article discusses how people choose to go to college based on their talents and abilities. Some talents are more useful for college jobs, while others are better for high school jobs. The study shows that people with higher expected earnings from college are more likely to attend. Parental background also plays a role in this decision. The data support the idea that people who go to college would have earned less if they didn't go, and vice versa for high school graduates. The study found no bias based on ability in the data.