As one moves between the general and the specific, two things that vary are (1) accuracy and (2) reach. Accuracy: how well your policy, design, idea, opinion describes the real facts of reality, how few exceptions and edge cases there are. Reach: how many facts of reality or units or instances your policy, design, or idea describes or accounts for. Accuracy is related to depth and focus; reach is related to breadth and speed. Both are important, and they’re in necessary conflict. This conf...