What is the color of anything when the lights are out? As we try to understand the material world around us, how much can we rely on our senses? Questions like these occupied the minds of eighteenth century empiricists as they attempted to know the essential qualities of the things in the material world. But how successful were they? What was wrong with their process of inquiry? Continuing this study on the Consequences of Ideas, Dr. Sproul looks at the weakness of the inductive method used in the eighteenth century and how it ultimately leads to atheism.