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¿Question #224721?
pricero1: Why did lips evolve to be so sensitive?

Grimsalt: To better gauge temperature. People who ate ice and drank boiling water died-out.
TomTi89: Well, mouths have to eat, drink, taste [for, say, determing whether it is safe to eat or drink], kiss, talk, breathe, and display emotions. It's a good thing they're sensitive. Don't want to damage them and not realise.
Jedadeana: ::mischievous smile::
Josey_23: To offest how brown the noses were becoming.