Learning about teacher's expectations is in the realm of metaknowledge that has nothing to do with mathematics. I can't believe I only just found your site, it's really boss. His twin attended but wasn't in the wedding party. My matron of honor was a big young black girl whose identical twin wasn't invited to the wedding for lack of space. In the chapter A Powerful Procedure for Proving Practical Propositions by Solomon W. Golomb we find several inspiring syllogisms a la Lewis Carroll All human beings are different.
All apathetic people are indifferent.
Therefore, no apathetic people are human beings. Every imcomplete investigation is a partial investigation Every unbiased investigation is impartial investigation. Therefore, no incomplete investigation is unbiased. To prove the assertion for all governments, it is sufficient to prove it for an arbitrary government. If a government is arbitrary, it is obviously unjust.