Dennis Mercer is a cybersecurity researcher, technology leader, author, and retired U.S. Army Chief Warrant Officer 4 with more than three decades of experience spanning military operations, law enforcement, enterprise security, and artificial intelligence. He currently serves as a Senior Program Manager at Microsoft, where he focuses on AI governance, data security, and responsible AI adoption for enterprise customers.Dennis is a doctoral candidate in the Doctor of Technology program at Purdue University. His research explores how explainable artificial intelligence, knowledge graphs, ontologies, and hybrid reasoning can transform unstructured cyber threat intelligence into transparent, evidence-based, and decision-ready intelligence. His work emphasizes accountability, explainability, and trust in AI systems used for high-stakes cybersecurity decisions.Throughout his career, Dennis has led cybersecurity initiatives across government and industry, combining deep technical expertise with practical operational experience. As a recognized speaker, educator, and advocate for responsible AI, he regularly shares insights on cybersecurity, AI governance, explainability, and the future of intelligent systems.His writing bridges the gap between complex technical concepts and practical understanding. Rather than focusing on hype, Dennis challenges readers to think critically about how AI works, where it fails, and how it can be deployed responsibly. His goal is to help leaders, practitioners, and everyday users develop a realistic understanding of artificial intelligence grounded in evidence instead of marketing.*Why AI Gets Things Wrong* is the first in a planned series of books examining artificial intelligence, cybersecurity, governance, and the technologies shaping the future of digital trust.Dennis lives in Missouri with his wife, Kristie, where he continues to write, conduct research, speak on emerging technologies, and mentor the next generation of cybersecurity professionals.