Chip Chick
“Now that we have super-flexible necks, we don’t need these anymore. Here’s a more obvious one: the tailbone. This is the ghostly remainder of our lost tails, which were useful for balance & movement in trees. We still grow tails as embryos, but then attack and destroy them in the following weeks. Not the most efficient system.”
I don’t know about you, but I kind of wish we still had the ear thing. We could be so slick trying to hear conversations around us.
Turning your head to listen to someone is a little more obvious if you’re trying to overhear someone else’s conversation.
Have you ever seen a lizard blink with like a sideways eyelid? Well, apparently, humans used to have those, also.
“Ever wonder what this little pink thing in your eye is? This is the plica semilunaris. It used to be a third eyelid that would blink horizontally,” she said.
“You can see this in action in the eyes of many other animals. Oh, and you know how you sometimes get goosebumps when you’re cold or scared? That’s a vestigial reflex that used to raise body hair to make you appear bigger or trap an extra layer of heat for warmth.”
“Some people can actually do this on purpose. Another cool reflex is the palmar grasp reflex. If you place your finger on an infant’s palm (or feet), they will try to grasp it. Ancestral primate babies would have used this to grasp onto their parents for transport.”
Sometimes, we forget how long it has taken for humans to get where we are. The technological advancements started with simple tools and hunting equipment to the computers and vehicles that are used on a daily basis.
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