I know that the past is a foreign place and that not everyone has had the privilege of being educated in how things were. This lass though was a gift through the exhibition, as in seconds she could veer from intelligent and excited interest, to questing thought, to a question that left you doing a double take in case she was winding her mates up.
One of her mates pointed out that if Egyptians burnt things, they must have had fire, and conversation regarding "rubbing things together" followed.