A form of disciplined questioning that enables critical thinking. There are six types of questions you can ask to dig deeper for the fundamental truth: 1. Clarification – “What do you mean by…?” 2. Probing assumptions – “What could we assume instead?” 3. evidence – “Why do you think this is true?” 4. Implications and consequences – “What effect would that have?” 5. Different viewpoints – “What would be an alternative?” 6. Questioning the original question – “What was the point of this question?”