“The web is now a massive system of connected people and technology and we have to study it as one. It connects people as they make and follow hyperlinks to a degree that results in complex properties no one expected. It has something like 1011 web pages in it and there are a similar number of neurons in the brain. The brain is something very complicated we don’t understand – yet we rely on it. The web is very complicated too and, though we built it, we have no real data about the stability of the emergent systems that have cropped up on it.”