What people are saying about Dr. Errol Wirasinghe, his experience, and his passion for the subject....! A powerful recommendation from Susan Green, Director Instructional Design Klein Independent School District From Catholic Charities, Archdiocese of Galveston Technip (Large Multi-National) Vice President, Dr. Richard Jacobs, Ph.D (MIT) and his team uses the XpertUS Decision Support System Strong Endorsements of the book: The Art of Making Decisions