Old Age Hair

There are many deep and meaningful things about which I could write, but today, I ponder such paradoxes as old age hair. I've read about the reasons for gray hair, and that scientific studies show that it is some mechanism turning off to protect the body from cancer and such dangers. Yet, I ponder the evolutionary advantage to the prevalence of hairs that in old age, sprout from places they didn't in the body's younger days.

Now, maybe I shouldn't publicly be admitting to old age, and indeed, I daily either try to refute that it is happening to me or ignore the effects. If I must say so myself, I have very nice eyebrows, or have until now. Short, light brown hairs arch nicely over my eyes, so that I really don't need to indulge in the female torture of plucking them. Lately, however, I've noticed that two hairs, which don't seem to belong to me, have decided to plant themselves among my eyebrows. They should be on some grandpa somewhere, and I don't know how or why they've come to be on me. Much longer, darker and thicker than my others, I viciously pull them out when I notice them. I can't help thinking what the advantage is to developing "grandpa" brows.
I have been reminded, however, by older un-named relatives, that I should be happy to pluck these few wayward hairs from my brows, and not elsewhere!