There are three types of questions: factual questions which have a correct answer, interpretive questions which can have multiple valid answers supported by evidence, and opinion questions where the answer cannot be proven right or wrong. For a question to be considered an issue relevant to the claim being discussed, it must be introduced by either side and both sides have a right to ask questions. There are four patterns of analysis that can help identify key arguments: cost/benefit analysis, priorities analysis, programs analysis, and continuities analysis. Potential issues are all possible questions, admitted issues are agreed upon, and ultimate issues alone determine the disposition of the claim.