Discussion and debrief:
Tell the group that obviously it took a long time and effort for us to find out the object in each round, but what if we had not time and only had one question to ask to find out the object, what would that question be?
The question would be “What is the object?” which is an open ended question.
Open ended questions are an excellent way to save time and energy and helps you get to the information you need fast, however closed questions can also be very useful in some instances to confirm your understanding or to help you control the conversation with an overly talkative person/customer.