"Because everyone knows there are Blue Eyes on the island, and they know everyone else knows this too, so on the hundredth day, everyone will commit suicide."
Lin Miao nodded.
"Yes, this is public knowledge. Now, let me ask you another question.
A group of mathematics professors who don't know each other are taking a bath in the same bathhouse. They suddenly see an interesting math problem and want to explain it to others, but don't want to reveal their identity as professors. What level of knowledge would they use to explain this problem?"
Richard Knight shook his head.
He couldn't come up with the answer.
Then Lin Miao said,
"The answer is elementary school-level knowledge, not exceeding the level of an ordinary person. Because they don't know each other's identity, or each other's academic qualifications, they have to use the most basic knowledge to solve the problem."
