I think I know what you mean. It's kinda like where being polite is saying to someone, "You are superior to me, and I will only say things that you will like." You see people take advantage of this, especially when the polite one is working for a store and the customer is being very IMpolite ranting and raving about something or other. Basically, it's just a matter of respect. Politeness shows a desire to relate to someone in a nice way which doesn't cause discomfort. If someone interprets my politeness as weakness, I'm more than happy to show them their error, as should you.
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