Thomas Erikson is a Swedish author and behavioral expert widely known for popularizing personality analysis through his bestselling book Surrounded by Idiots. Born in Sweden, he built a career as a consultant, lecturer, and communications trainer before rising to international acclaim with Surrounded by Idiots, followed by works including Surrounded by Bad Bosses and Surrounded by Setbacks. Drawing on the DISA/DISC behavioral model, his books offer readers an accessible framework for identifying different personality and communication styles in order to navigate relationships, workplaces, and everyday interactions more effectively. Surrounded by Idiots became a global phenomenon, translated into dozens of languages and read by millions seeking practical tools for understanding the people around them, though some psychologists have criticized the DISC model underlying his work as an oversimplified approach to personality science. Known for his straightforward, often humorous approach to behavioral psychology, Erikson's work continues to shape popular conversations around communication and personality and inspire readers across the world.