Why is it that the hair on your head - however long - when it dangles down your back or brushes across your shoulder - doesn't tickle, but as soon as one itty-bitty hair gets detached from your head, and goes down your back or across your shoulder - it itches like hell?????
What is the evolutionary advantage of this?
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I'm not sure it is evolution, but maybe it gives us something to do with our hands now that our knuckles are dragging on the ground (apart from a couple of guys I went out with in my late teens).
I think I met them.......
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