**A recent study from the University of Waterloo, published in *Cognitive Psychology*, sheds light on why people prefer simple explanations.** This preference is linked to the human need for efficiency—doing more with less—both in understanding situations and in achieving goals. Researchers Claudia Sehl, Ori Friedman, and Stephanie Denison conducted seven experiments with 2,820 participants. They found that individuals consistently gravitated towards simpler explanations and methods because they involve common and reliable causes. **Complex or rare causes are perceived as less helpful**. Sehl and her colleagues suggest that when causes are common and dependable, they are more appealing not only as explanations but also as strategies for future accomplishments. **This reflects a shared mental process: valuing efficiency influences both our interpretation of events and our approach to achieving results.**