Cognitive biases play very important roles in the decisions we take in our day to day lives. They impact our rationale in ways, we've never thought. They make getting to the right decision, a long hard, and often impossible, process. This is why you need to understand what these 4 crucial errors in thinking are, and how to get around them, to get things right. We can never totally remove them, but we can minimise their effects by sharpening our brains - all this and more, in this episode, based on an excerpt from, The Decision Book, by Mikael Krogerus and Roman Tschäppeler.