If all human beings on planet Earth only had noses in a mouth, but no eyes, would we be sniffing each other's butts how animals do in order to meet an introduce ourselves to people?
Think about it, we only have 5 senses sight, smell, taste touch, and I forgot the other one.
If we really only had noses and mouths would that actually be the way that we introduce ourselves to people? Think about it.

