*Surrounded by Idiots: The Four Types of Human Behavior and How to Effectively Communicate with Each in Business (and in Life)* is a book by **Thomas Erikson**, published in 2014.

The book presents a model of human behavior based on four color-coded personality types: Red (dominant), Yellow (inspiring), Green (stable), and Blue (analytical). Erikson explains how understanding these personality types can improve communication, collaboration, and relationships in both personal and professional settings. *Surrounded by Idiots* provides practical strategies for interacting effectively with different personality types, aiming to enhance understanding and reduce conflict.