My favourite moment of the season so far, Rothstein has just had an abnormally bad night at the poker table putting his and Nucky's business relationship at risk. Meyer spots this opportunity and tells Nucky why he should go into business not with 'AR' but himself.
Also, the history with the Luciano story is slightly off in this scene imo. Charlie has said in his book that he used to protect little gangs, like Meyer's, from other bigger kid gangs. When Luciano proposed to protect Lansky he refused his help, that's why Charlie asked him to join, he had admiration for the little Jew kid refusing help (that he clearly needed) out of pride.
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