The "Murder Board"

Cannot the intelligent presenter anticipate the tough questions likely to be asked? The answer to these questions is that no matter how hard we try to think of tough questions that may be asked, a little censor in our mind generally provides only questions to which we already have answers. We need other minds to push us. Albert Einstein said that "what a person does on his own, without being stimulated by the thoughts and experiences of others, is even in the best cases rather paltry and monotonous."