The article explores why people in different European countries have varying opinions on the idea of some countries in the EU moving faster than others. The researchers found that citizens in Southern Europe tend to oppose this idea more strongly than those in Northern and Eastern Europe. They also discovered that individuals who are highly educated and hold liberal-conservative views are more likely to support differentiated integration in the EU. These findings suggest that both national concerns and personal values play a role in shaping people's attitudes towards this concept in the European Union.