Who should be responsible when an AI system causes harm? Should AI tools be allowed in classrooms or hospitals? Is large-scale data collection a fair price for convenience? This lecture invites you to explore the ethical challenges of artificial intelligence and data collection in the modern age. Using real-world case studies and ethical frameworks, we will examine how AI shapes education, transportation, healthcare, social media, and everyday life. The course focuses on balancing benefits, harms, and social consequences while developing critical thinking skills.