I have been watching this and it is Awesome looking at early development of us human beings having Grandchildren myself it explains a lot of things it's worth the £6.99 you currently pay for Apple TV. And the picture quality is awesome also it is also very informative. And well made a lot of thought went into making this I think. Apple have done a good job the narrator is very good also Olivia Colman it is also filmed around the world in different places showing different people around the world it is a must see program in my opinion please make your mind up to see this I highly recommend this.