[ianbishop]

>"One of Twitter’s central innovations was to discard symmetry: you can follow someone without them following you."

Apparently Twitter rebranded the concept of a hyperlink.

>"I expect we’ll look back on the next few years as the golden age of graph innovation."

I would say that the 'golden age of graph innovation' began much before this. Which is why in Computer Science, as he describes, we have a special edition of graph theory named 'network theory'. I wonder what that's for!