Just finished reading the short book Thinking it through by Martin Salter. The book is very helpful in helping us to think clearly about issues. Here are some very helpful observations I picked up from it: 1 . A helpful tool for processing questions is the "six honest serving men": who is the authority; why are they the best person to speak on the question; how do they come to their conclusions; what exactly is the question for consideration; where , geographically and culturally, is the question being discussed; and, when , historically, are we thinking about the question? 2 . The challenge of sound thinking is determining which authority (or combination of authorities) is best placed to inform a particular decision. We all appeal to some authority; the question is whether that's a good call or not.