Charlie is co-founder and principal of The Center for Agile Thinking. He is a cognitive psychologist and computer scientist. Charlie has lectured and consulted at corporations and universities worldwide. He has served as an expert witness in software interface patent disputes. Author and founding editor of User Experience magazine, and former columnist for Internet Week and MSDN magazine, Dr. Kreitzberg has served on the national boards of the Usability Professionals Association and the Society for Information Management and is currently the technology director for Einstein’s Alley, a New Jersey economic development initiative.