<span>May 30, 1868, at Arlington National Cemetery
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Answer: to portray Huck’s father as uneducated and ignorant.
In this excerpt, Twain most likely uses humour to highlight the absurdity of the father's sentiment. This is done in order to portray Huck's father as uneducated and ignorant. The father tells Huck that he does not see the importance of school. Moreover, he thinks school is damaging because it will teach Huck to feel superior to his dad, who is unlikely to have attended school.
Tough to say, but I’d probably go with Hiruzen Sarutobi, the Third Hokage.
He was chosen to be Hokage because he agreed with the philosophy of the First and Second Hokage and because he was an extraordinarily powerful ninja. But neither of those things translate into leadership skill, and poor Sarutobi repeatedly demonstrated his weakness as a leader.