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Conceding some territory to your opponents is always a good idea. No position is 100% right or 100% wrong; we are all sinners fumbling in the dark. Conceding that your opponent may have a point here or there will not weaken your defenses. If nothing else, this tends to disarm the other side. Absolute positions that refuse to yield an inch create absolute oppositions which are equally stubborn. Surprise your readers. Be reasonable, be understanding, be sympathetic to their concerns, and then when their defenses are down, zap them with logic and club them to death with facts!