One answer is psychological distance.
This research has important practical implications. It suggests that there are several simple steps we can all take to increase creativity, such as traveling to faraway places (or even just thinking about such places), thinking about the distant future, communicating with people who are dissimilar to us, and considering unlikely alternatives to reality. Perhaps the modern environment, with its increased access to people, sights, music, and food from faraway places, helps us become more creative not only by exposing us to a variety of styles and ideas, but also by allowing us to think more abstractly. So the next time you’re stuck on a problem that seems impossible don’t give up. Instead, try to gain a little psychological distance, and pretend the problem came from somewhere very far away.