Tom Robinson's innocence is proven by the skillful Atticus Finch well beyond a shadow of a reasonable doubt. However, sadly, the racial prejudice of the town of Maycomb is so strong and omnipresent that even a man who is completely and quite obviously innocent can be convicted when every single member of the jury is convinced of the impossibility of his innocence. The most powerful point of Atticus's defense rests on the abilities of the hypothetical attacker. Atticus points out that Mayella's injuries suggest that whoever attacked her must have favored his left hand. However, as the result of an accident involving a cotton gin, Tom's left arm is so useless that it may as well not be there, as displayed when he attempts to swear on a bible:
Thomas Robinson reached around, ran his fingers under his left arm and lifted it. He guided his arm to the Bible and his rubber-like left hand sought contact with the black binding. As he raised his right hand, the useless one slipped off the Bible and...
(The entire section contains 3 answers and 1222 words.)
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