我们有史以来第一次以如此清晰的方式，目睹胚胎在一个月大到十星期大这个过程中的面部形成过程——直到这个过程结束，胚胎的体积也还只有一颗菜豆那么大。不过，更令人震惊的或许是影片本身——在子宫中，人类的“变形”并不比什么科幻动画与电影作品中的机器人来得平淡。胚胎的发育是地球生物演化数十亿年的缩影，人类的本源和几乎所有其它生物一样，在于鱼类。因此，人类的眼睛也同样是先出现在头的两侧，到后来才转移到中间；你的下唇与颚部最初出现在颈部的位置，一如鱼类的腮，而上唇和鼻孔则是从脑袋的上方逐渐降下来和下面“合体这一切扭曲、旋转、移动与拼接浑然天成，没有一道疤痕和缺口，不过在拼接的交汇处终究还是留下了一点痕迹，那就是你的人中以上内容出自BBC节目Inside the Human Body，由Michael Mosley博士主持。节目中还介绍了诸如“打嗝是从鱼类和两栖类继承下来的行为哦”等等有趣知识。
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