&gt; PS: As soon as someone says &quot;i don&#x27;t know&quot; you need to stop and realize they would spend a few minutes on google. Spending more time on the topic at this point is pointless.<p>Or, give them the answer and see what they can do with the information. IE, pretend that they DID lookup the answer and go from there. Did they grasp the concept? Could they make logical inferences from that new concept? If they can&#x27;t do it when you tell them the answer, why would you think they could if Google told them it instead?