Here's a short story:

Jack had gone to the university to study history, but he kept playing all the time and at the end of his first year, his history professor failed him in his exams. He was so poor at his subject that he would have to leave the university. However, his father made up his mind that he would go to see the professor to ask him to let Jack go on his studies the next year. "He's a good boy," said the father, "and if you let him pass this time, I'm sure he'll improve a lot next year and pass the exam at the end of it really well." "No, no, that's quite impossible." said the professor at once, "Do you know, last month I asked him when Napoleon had died, and he didn't know!" "Please, sir, give him another chance." said Jack's father. "You see, I'm afraid we don't take any newspapers in our house, so none of us even know that Napoleon was ill." (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What was Jack studying?
Guess: history

Question: Was he in high school?
Guess: No

Question: Where was he studying?
Guess: the university

Question: Did he pass his tests?
Guess: No

Question: Who decided to plead for Jack to be allowed to stay in school?
Guess: his father

Question: Did the professor agree to let him stay?
Guess: No

Question: Did the professor ask Jack a question?
Guess: Yes

Question: What was it?
Guess: when Napoleon had died

Question: Did he know the answer?
Guess: No

Now answer the following question in the same format.

Question: Why did Jack's dad say his son didn't know the answer?

we don't take any newspapers in our house