For three hours he asks me questions about general facts and history.
"What's the square root of 144?"
"What is Newton's first law of motion?"
"An object in motion remains in motion unless acted upon be an outside force."
"Who was the second man on the moon?"
"Who shoot JFK?" We argue about this one but he's not here to debate me and we move on.
"Is light a particle or a wave?" We disagree again but have fun disagreeing with diagrams and a page of math.
"What city was Fat Man dropped on?"
"Nagasaki, Japan." And so on.