The question about choosing between harsh truths or willful ignorance is as old as Plato’s Cave; older perhaps, down to the Tree of Good and Evil. Science Fiction writers can be as illuminating as they can be ambiguous. In the original Matrix Neo took the Red Pill, choosing Truth – and got himself into a world of trouble. Wouldn’t the Blue Pill (of “Ignorance is Bliss”) have served him better? This volume examines the double-edged quality of knowledge, as explored in a variety of SF scenarios. Can a truth cause more harm than a lie? Can we live in self-deception? Is there a danger of knowing too much? Is knowledge something inherently good, worth seeking for its own sake, is it just a neutral tool, or is it, perhaps, something better left alone?