With just five minutes per senator, and them each with a queue of questions to get through, few focused on the tougher queries, and even fewer had time for follow - ups to
dig for real answers.
The more clever the students, the more likely they were to end up with the wrong
answer, because the more plausible theories they could throw out, and the more prone to substituting their relatively cheap guesses
for digging out the
real answer.