Rule No. 5 of 12: The successful cross-examiner never asks an open-ended question such as “why” unless it does not care what the answer is.
In discussing rule 4 above, we gave a good example of why you do not ask open-ended questions. If you ask a witness “why?” they will tell you. In other words, they will give a speech, which usually will hurt your client. If you are cross-examining a witness, by definition, that means that the witness has been called by the other side to offer testimony against your client. If you ask them an open-ended question, you are giving them a chance to speak. Thus, you should usually ask questions that ask for a yes or a no response. You should not even ask those questions unless you know what the answer is going to be.
In some circumstances, you really do not care what the answer is. For example, if a witness has been paid by a magazine for their story and they are alleging that a celebrity defendant has allegedly committed a sexual assault against their friend, you can ask them all kinds of questions about, “Isn’t it true that they were paid for their testimony?” etc. Of course, they will deny it, but if you have evidence that they hired an agent, were paid by the magazine, etc., then it does not really matter what they say because they will be sufficiently impeached before the jury in any event. Always ask leading questions that suggest the answer you want. Avoid open ended questions such as why or how and you will follow this rule.
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