When you saying the hair or the nail is not part of the body, its part of the body' accessory, just mean if you grow your nail loooooong enough, like your hair, whenever something hit, you don't feel it. Nothing felt. There is no nerve system in it. Not even the blood even.

So I say that is CSI those kids their Intern does.....they probably process those animals, and if today our world has this TV turning real, I will tell you, that including some of the giant beast, the toes or finger nails, and the rest of the hair. 

Let's the winter of the Cave or the big hairy elephant in the Ice age, we have those specie saying, their giant size they don't feel a thing. that is not true, you look at the our elephant. Their skins are just thicker, and they don't turn their back on the ground, for saying upside down. We never see an elephant to turn themselves upside down.

But when you saying your anatomy to which this evolutionary biology inside these encyclopedia you studying in when you were the children idea, the school, or the outside classroom the extra reading, you saying you might remember a diagram on the human evolution defined from the water, on our Earth. Its the eco-system and bio-sphere we saying we rising from the flaura or fona like that dead Bob Dean American Classify in the SMTV saying those words, indeed....we know the evolution from the plant Kingdom and that is Dr. Bing Shen in W Two worlds his college major, you saying how far and extent this Harry Potter class, you have a robotic Ancient Chasez in his own lecture on the potion class or the herbs you simple....搗碎 mortar and pestle ....? 

You wishing to citation all this from the TV materials, you may do so at this time. I talk all this, you cannot possible asking me if 尊上 I know where you citing at. I am telling you so, I instruct this class, I know where is the reference at.