后来它进化到一个社交网络：一本关于它的成员的敞开的书，欢迎任何人来阅读。
It's evolved since then into a social network: an open book on its members' lives, welcoming just about anyone.
看看未来，用你充满喜悦的心灵，因为它是欢迎和值得拥有的，如果不是对于你的进化不可或缺。
Look at the future with joy in your hearts, as it is welcoming and desirable if not essential to your evolution.
但一些新的证据已经加入人类进化史中，而这总是受到欢迎的。
But some new evidence has been added to the ascent of man, and that is always welcome.
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