The contrast between hero and opponent is powerful only when both characters have strong similarities. Each then presents a slightly different approach to the same dilemma. And it is in the similarities that crucial and instructive differences become most clear. By giving the hero and the opponent certain similarities, you also keep the hero from being perfectly good and the opponent from being completely evil. Never think of the hero and opponent as extreme opposites. Rather, they are two possibilities within a range of possibilities. The argument between hero and opponent is not between good
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